### Home > MC2 > Chapter 9 > Lesson 9.1.3 > Problem 9-31

9-31.

Find the area and circumference of a circle that has a diameter of and as a decimal approximation.

Use the formulas for the area and circumference of a circle:

Area:

Circumference: or

9-31.

Find the area and circumference of a circle that has a diameter of and as a decimal approximation.

Use the formulas for the area and circumference of a circle:

Area:

Circumference: or