Question

Question #ae2f4

Answer 1

Firstly your formula is wrong it is cubed not squared!

Let the radius of the sphere be r then:

Diameter = `14pi`
`:. 2r=14pi`
`:. r=7pi`

Then using the formula for the volume of sphere `v=4/3pir^3` we have
V=`4/3pi(7pi)^3`
V=`4/3pi(343pi^3)`
V=`1372/3pi^4`