Question

if radius of sphere is tripled ,by what % surface area increases?​

Answer 1

Answer:

In the case of a sphere if the radius is tripled the surface becomes (3r)^2 or 9-fold. In other words the surface area will increase by 800%.

Answer 2

Answer:

In the case of a sphere if the radius is tripled the surface becomes (3r)² or 9 - fold. In other words the surface area will increase by 800% .