Finding the Area and Circumference of a Circle

Which of the following choices is closest to the area of a circle? (d = 9 cm)

• 253.34 cm²

• 63.59 cm²

• 56.52 cm²

• 28.26 cm²

Find the circumference of the circle.

• 18.8 cm

• 113 cm

• 37.7 cm

• 452.2 cm

What is the area of this circle?

• 82.13 m²

• 78.50 m²

• 314.16 m²

• 170.12 m²

What is the formula for finding the circumference of a circle?

• C = r²

• C = rd

• A = π·r²

• C = π·d

What is the circumference?

• 36

• 18pi

• 108pi

• 36pi

Find the area of the circle

• 56.52

• 254.34

• 1017.36

• 113.04

What is the circumference of a circle?

• the distance around a circle

• the area of a circle

• halfway through a circle

• a line through the center of a circle

a line that goes from one edge of the circle to another and crosses the center point

• center

• diameter

• dime eater

• radius

What is circumference?

• The distance around a circle.

• The space inside the circle.

• The length of the straight line segment that passes through the center of the circle and whose endpoints lie on the circle.

• The line from the center of a circle to any point on its edge.

Find the circumference of the circle

• 87.82in

• 153.86in

• 43.96in

• 307.72in