Question

The volume of a sphere varies directly as the cube
of its radius and its volume is 36pie cm\cube. Find
the volume of the sphere, when the diameter is
doubled.​

Answer 1

Answer:

Let the radius be r then

The volume of the given sphere is 36πcm

3

The volume of every sphere is,

V=4π

3

r

3

So we can equate the two volumes:

36π=4π

3

r

3

Multiply both sides by 3

r

3

=27

r=3 cm

Hence, this is the answer.

Answer 2

Volume of sphere is equal to 4/3 pie r cube
4/3 into 36 into r
= 3 ones are

3 ones are and 3 twos are 6
You get
4 into 12
48

R=48 is the right answer

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