Question

What is the area of the top surface of a circular manhole cover that has a diameter of 60 centimeters?

Answer 1

A≈2827.43cm²

Explanation:

A≈2827.43cm²

d Diameter

60

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·602≈2827.43339cm²