Question

Find the length of the radius of a sphere with a surface area of 78.54 km2.
A. 5 ft
B. 15 ft
C. 10 ft
D. 2.5 ft

Answer 1

15 ft

Answer 2

surface area = 4πr^2
Put surface area = 78.54 into the equation and you'll get the answer
Sorry i don' think it is a good question, i just clicked it accidentally

Answer 3

15 ft - B