It is C because 4 pi r^2 is the surface area equation. 4 times 6 squared= 144. 144pi = surface area.
Since it's a square, it must have 4 equal sides.
20 / 4 = 5
The formula for area: Area = length x width
4 x 5 = 20.
The area is 20 inches! (Don't forget, the answer is squared!)
Answer:
Around 460 miles
Step-by-step explanation: