Question

The radius of a sphere is increased by 10 . The surface area increases by

Answer 1

hey mate here is the answer

here radius of the sphere = r unit (let)

therefore surface area = 4πr^2 unit

now new radius = r+10 unit

therefore new radius = 4 π (r+10)^2

= 4 π r^2 + 20 r + 100 units

therefore the surface area is increased by

4πr^2+20r+100- 4πr^2

=20 r +100 units

pls mark it as the brainliest answer