Question

find the area and the circumference of a circle with a radius 9cm. Use the value 3.14 for pie and do not round your answers

Answer 1

Answer:

Area = 254.34cm²

Circumference = 56.52cm

Explanations:

The radius, r = 9 cm

π = 3.14

The area of a circle = πr²

Area = 3.14 x 9²

Area = 3.14 x 81

Area = 254.34cm²

Circumference of a circle = 2πr

Circumference = 2 x 3.14 x 9

Circumference = 56.52cm