What’s the answer to this?

second option

Step-by-step explanation:

Given 2 similar figures with ratio of sides = a : b, then

ratio of areas = a² : b²

(a)

ratio of sides = =

ratio of perimeters is the same as ratio of sides =

(b)

ratio of areas = 7² : 2² = 49 : 4 =

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)