volume of a sphere if the radius is 2 ?
please help me
2007-05-13 14:06:09 · 6 answers · asked by Wonderfun 1 in Science & Mathematics ➔ Mathematics
using 3 as pi?
2007-05-13 14:27:54 · update #1
V=4/3 x pi x r squared. That is, 4 pi x 2 x2 , all divided by 3.
You finish it.
2007-05-13 14:12:44 · answer #1 · answered by spyder monkey 1 · 1⤊ 0⤋
There is an easy formula for this
V = 4pi/3 x r^3. If r=2, r^3=8. Now 4pi = 12.5 appx, so everything in the numerator is about 100. Then the volume is about 33.
2007-05-13 21:10:42 · answer #2 · answered by cattbarf 7 · 0⤊ 1⤋
Example:
Find the surface area and volume of the sphere whose radius is 3 centimeters.
Surface area = 4r2 = 4(3.14)(3)2 = 113.04
Volume = 4/3r3 = 4/3(3.14)(3)3 = 113.04
***ANSWER***
Surface Area
= 4 r 2
= 4(3.14)(2) 2 = 50.27
Volume
= 4/3 r 3
= 4/3(3.14)(2)3 = 33.51
2007-05-13 21:23:51 · answer #3 · answered by narke2000 1 · 0⤊ 0⤋
volume of sphere=4pi r^3 divided by three.
16pi/3
2007-05-13 21:08:41 · answer #4 · answered by dpmwcml 2 · 0⤊ 1⤋
You people arn't helping
You're preventing the student from working out the problem
just give the formula!
2007-05-13 21:13:21 · answer #5 · answered by Brian 4 · 0⤊ 0⤋
V = 4/3*Pi*r^3
V = 4/3*Pi*2^3
V=33.51
2007-05-13 21:09:29 · answer #6 · answered by davec996 4 · 0⤊ 1⤋