Question

I have a spherical solid of radius 7 cm , I cut it in two equal parts and paint both parts seperatly .calculate the total painted area.

Answer 1

Here is your solution

Answer 2

r =7cm
total painted area=2(3pie r×r)
=2(3×22/7×7×7)
=2(3×154)
=2× 462
b = 924