Question

if the radius of a sphere is increased by 20 surface area?​

Answer 1

Please ask the question perfectly..Sorry

Answer 2

Answer: 4/3π(r³+8000+60r²+1200r)

Step-by-step explanation:

Surface area of sphere = 4/3πr³

Radius is increased by 20 = r+20

Surface area of sphere=4/3π(r+20)³

=4/3π(r³+8000+3r²×20+3r×400)

=4/3π(r³+8000+60r²+1200r)