Please help

Find the surface area of a sphere with a radius of 10 in. Express your answer in terms of π.

A: 400π in2

B: 800π in2

C: 500π in2

D: 1,600π in2

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25