Please help me find this answer

A = 706.9 ft²

C = 94.2 ft

Step-by-step explanation:

A = πr²

C = πd

r = d/2 = 30 ft/2 = 15 ft

A = π × (15 ft)² = 225π ft² = 706.9 ft²

C = π × 30 ft = 30π ft = 94.2 ft

12 servings. 4 times 3= 12

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)