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21 September 2008
Matematika Kelas 9

tolong beritahu saya cara menemukan volume kerucut,soalnya besok dikumpulin

Pada prinsipnya cara mencari volume kerucut = cara mencari volume limas, hanya saja alas kerucut berupa lingkaran.

Volume limas = (1/3) Volume kubus

                     = (1/3) luas alas x tinggi

maka:

Volume kerucut = (1/3) Luas alas x tinggi

                      = (1/3) luas lingkaran x tinggi

                      = (1/3) ∏.r2.t

dimana, ∏ = 3,14 atau 22/7

             r = jari-jari lingkaran alas = (1/2) diameter lingkaran

             t = tinggi kerucut

Demikian ssemoga jelas dan puas. Makasih.


Drs. Sudarsono, M.Ed

21 September 2008
rieka
Matematika Kelas 9

tolong britau saya cara menemukan volume kerucut serta penjelasannya

Pada prinsipnya cara mencari volume kerucut = cara mencari volume limas, hanya saja alas kerucut berupa lingkaran.

Volume limas = (1/3) Volume kubus

                     = (1/3) luas alas x tinggi

maka:

Volume kerucut = (1/3) Luas alas x tinggi

                      = (1/3) luas lingkaran x tinggi

                      = (1/3) ∏.r2.t

dimana, ∏ = 3,14 atau 22/7

             r = jari-jari lingkaran alas = (1/2) diameter lingkaran

             t = tinggi kerucut

Demikian ssemoga jelas dan puas. Makasih.


Drs. Sudarsono, M.Ed

21 September 2008
rieka
Matematika Kelas 9

tolong britau saya cara menemukan volume kerucut serta penjelasannya

Pada prinsipnya cara mencari volume kerucut = cara mencari volume limas, hanya saja alas kerucut berupa lingkaran.

Volume limas = (1/3) Volume kubus

                     = (1/3) luas alas x tinggi

maka:

Volume kerucut = (1/3) Luas alas x tinggi

                      = (1/3) luas lingkaran x tinggi

                      = (1/3) ∏.r2.t

dimana, ∏ = 3,14 atau 22/7

             r = jari-jari lingkaran alas = (1/2) diameter lingkaran

             t = tinggi kerucut

Demikian ssemoga jelas dan puas. Makasih.


Drs. Sudarsono, M.Ed

20 September 2008
riha
Bahasa Inggris Kelas 9

tolong buatkan teks procedure tentang lingkungan,bales sekarang ya mbak/mas?

How to RecycleEveryone knows it's better to recycle an item than to throw it away. It's good for the environment, rewarding, and, in some areas, can earn you spare change. Recycling helps cut domestic waste that would otherwise be buried in landfills and provides a steady supply of pre-used materials that can be transformed into new, practical objects we use every day. Recycling is beneficial to the environment and to us.Things You'll Need·                       A local recycling center ·                       Water to rinse the items ·                       Reusable bags ·                       A bin in a convenient location ·                       Recyclable items  Steps1.                     Find out what recycling programs or centers exist in your area. It's no use trying to recycle something if no processing center exists. A good resource for programs in the U.S. can be found at NRC-Recycle.org 2.                     Determine what categories of items can be recycled in your area, then designate a separate location for each category. For example, if a nearby center accepts aluminum cans, plastic drink bottles, and newspapers, you will want to have separate bins for each type of item, as well as a waste bin for non-recyclable wastes. 3.                     Leave your bins in an appropriate collection area, or take your recycling to a processing center yourself once you've accumulated enough to make it worth the trip.   
Operator


20 September 2008
Indra
Bahasa Inggris Kelas 9

tolong donk cariin contoh teks explanation !

The aim of an explanation is to tell how or why something happens. Explanations are often about natural or scientific phenomena, processes or events.

 

Carnivorous plants

These students wrote their explanations after watching a video about carnivorous  (fresh-eating) plants. These plants live in places that have very few nutrients in the soil. To survive in this hostile environment, they capture and eat live prey. Most eat insects, but some can swallow rats and small birds.

 

Venus Flytrap

The Venus Flytrap is an extraordinary plant. It is a carnivorous (flesh eating) plant which can digest flies and other insects.

 

When the ‘trap’ is open, it looks like a large seashell with sharp, spiky ‘teeth’. It has bright colours and a beautiful scent.

 

Insects are attraced to the plant because of its vibrant colours and its sweet-scented nectar. The insects land on small ‘trigger’ hairs of the trap and this pressure causes the trap to close. If the insect is too small, the chamber will not close, because there is not enough pressure. Once the trap has swallowed an insect it takes ten days to diggest it.

 

The Venus Flytrap prefers tropical weather and so it is found in places like South America. It is often used by people to catch the annoying insects that fly around their houses. In my opinion it’s very useful plant!

 

Bradley Aldous


Operator

19 September 2008
candra jaya,solo
IPA Kelas 9

tolong jelaskan materi tentang sistem ekresi????????

Sistem ekskresi merupakan sistem dalam tubuh yang berfungsi mengeluarkan sisa metabolisme agar tidak meracuni tubuh. Sistem pengeluarannya dilakukan oleh organ ginjal, paru - paru, dan kulit.  Ginjal mengeluarkan urine, paru - paru mengeluarkan karbondioksida dan uap air, dan kulit mengeluarkan keringat.

Ginjal, di dalamnya terdapat nefron sebagai satu satuan sistem penyaringan darah. Nefron terdiri atas simpai Bowman dan glomerulus yang berupa cabang kapiler darah. Darah yang mengalir melalui glomerulus, merembeskan cairan dan ditampung oleh simpai Bowman. Rembesan (filtrat) disebut urine primer dan mengalir melalui tubulus. Didalam tubulus terjadi penguraian, zat yang masih diperlukan tubuh di reabsorbsi oleh tubulus, sisanya merupakan urine sekunder dan dikeluarkan ke rongga ginjal. Dari rongga ginjal, urine dialirkan ke dalam kandung kemih melalui ureter, akhirnya dikeluarkan dari tubuh melalui uretra.

 


Arif Ichwantoro

19 September 2008
za
Matematika Kelas 10

kasii soal logaritma+fungsi donk.... besok ulangan nii

download soal ini lampiran

Drs. Maman Surahman, S.Pd


19 September 2008
riha
Bahasa Inggris Kelas 9

tolong buatin text procedure tentang lingkungan

How to RecycleEveryone knows it's better to recycle an item than to throw it away. It's good for the environment, rewarding, and, in some areas, can earn you spare change. Recycling helps cut domestic waste that would otherwise be buried in landfills and provides a steady supply of pre-used materials that can be transformed into new, practical objects we use every day. Recycling is beneficial to the environment and to us.Things You'll Need·                       A local recycling center ·                       Water to rinse the items ·                       Reusable bags ·                       A bin in a convenient location ·                       Recyclable items  Steps1.                     Find out what recycling programs or centers exist in your area. It's no use trying to recycle something if no processing center exists. A good resource for programs in the U.S. can be found at NRC-Recycle.org 2.                     Determine what categories of items can be recycled in your area, then designate a separate location for each category. For example, if a nearby center accepts aluminum cans, plastic drink bottles, and newspapers, you will want to have separate bins for each type of item, as well as a waste bin for non-recyclable wastes. 3.                     Leave your bins in an appropriate collection area, or take your recycling to a processing center yourself once you've accumulated enough to make it worth the trip.   
Operator


19 September 2008
IPA Kelas 7

asam,basam,garam

Asam adalah zat yang bila terlarut dalam air akan ter ion dan menghasilkan gugus H+

Basa adalah zat yang bila terlarut dalam air akan ter ion dan menghasilkan gugus OH-

Garam adalah persenyawaan antara unsur logam dengan sisa asam. 


Arif Ichwantoro

19 September 2008
IPA Kelas 7

asam,basa,garam

Asam adalah zat yang bila terlarut dalam air akan ter ion dan menghasilkan gugus H+

Basa adalah zat yang bila terlarut dalam air akan ter ion dan menghasilkan gugus OH-

Garam adalah persenyawaan antara unsur logam dengan sisa asam.


Arif Ichwantoro

 

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