If the total surface area of solid sphere is 98 56 cm square then find the radius of the sphere - Maths - Surface Areas and Volumes

Question

If the total surface area of solid sphere is 98 56 cm square then
find the radius of the sphere

Ashutosh Verma · Accepted Answer

Answer :

Given total surface area of solid sphere = 98 56 cm2
And
We know Total surface area of sphere = 4 π r2
Here r = Radius of sphere
So,
4 π r2 =  98
56⇒4 ×227× r2 =  98
56⇒88× r2 =  98
56× 7⇒88× r2 =689
92⇒r2 =689 9288⇒r2 =7 84⇒r =2
8
So,
Radius of sphere = 2 8 cm ( Ans )

If the total surface area of solid sphere is 98.56 cm square then find the radius of the sphere.