Question

4) The DIAMETER of a sphere is doubled. What is the new volume of the sphere?


A)

8
3
πr3


B)

16
3
πr3


C)

32
3
πr3


D)

64
3

Answer 1

C .

Answer 2

i hav justifications if u want i'll tell u

Answer 3

Why Do You Say Its C ? lol

Answer 4

When you double the diameter, you double the radius. V = (4/3)(pi)r^3, so new V is (4/3)(pi)(2r)^3, so the volume gets to be 8 times as much as the original.

Answer 5

let the dia be 'd'
the ques says that the dia is doubled therefore the new dia is '2d'
=> radius of the new sphere is '2r'
we know that, volume of spere is v,= (4/3) pie (radius)^3
= (4/3) pie (2r)^3
if you solve it u'll be getting ma ans

Answer 6

(4/3)(pi)(2r)^3 = (4/3)(pi)(2^3)(r^3) = (4/3)(pi)8(r^3) = 8(4/3)(pi)(r^3) = 8 times original volume.

Answer 7

Is this making sense to you now?

Answer 8

Sorry , Umm Yea Im Starting To Get A Better Understanding