Could someone help me with this. I have tried to get the correct answer and it is still wrong unless my paper has a typo. My answer is 381.86 cubic meters.
Find the volume of a sphere that has a diameter of 9 meters.
Please work out so I can understand......
2007-08-30 15:29:48 · 6 answers · asked by Tim M 1 in Science & Mathematics ➔ Mathematics
V = ( 4 / 3 ) π r ³
V = ( 4 / 3 ) π (4.5) ³ m ³
V = 381.7 m ³
2007-08-30 21:41:26 · answer #1 · answered by Como 7 · 1⤊ 0⤋
The diameter is 9 meters.
That makes the radius 4.5
Volume = (4/3) * pi * (4.5 * 4.5 * 4.5) = 381.703507 cubic meters, before you adjust for significant digits.
What's the correct answer supposed to be?
2007-08-30 15:40:31 · answer #2 · answered by Anonymous · 0⤊ 0⤋
DIAMETER = 9
SO THE RADIUS = 9/2
volume = 4/3 pi r^3
= 4/3*22/7*729/8
=381.8 approx
2007-08-30 15:38:00 · answer #3 · answered by PRIYADARSHINII 2 · 0⤊ 0⤋
The volume formula for a sphere is V =4/3(pi)r^3
If diameter is 9, radius is9/2
V=4/3(3.14)(9/2)^3
V=4/3(3.14)(729/8)
V=381.51 cu.meters
If I use 3.1416 for (pi). I get 381.70
If I use 22/7 for (pi), I get your answer: 381.86
You have the correct answer. Book is wrong.
2007-08-30 16:23:57 · answer #4 · answered by Grampedo 7 · 0⤊ 1⤋
V = 4/3 * pi* radius to the 3rd power
V = 4/3 * 3.1416 * (9/2)^3
V = 381.7044 meter cube
2007-08-30 15:41:17 · answer #5 · answered by abmawabmahc 1 · 0⤊ 0⤋
(4(PI)/3)r^3
2007-08-30 15:35:41 · answer #6 · answered by james m 3 · 0⤊ 0⤋