Circumference and Area Quizizz

Name the line show.

• Secant

• Diameter

• Radius

• Chord

What is the formula for CIRCUMFERENCE of a circle?

• C=πd

• C=πd²

• A=πr²

• C=πβγΔ

What is Circumference?

• π
• The distance around the outside of a circle
• The amount of space on the inside of a circle

What is the circumference of the circle?

• 25.12 in.
• 12.56 in.
• 50.24 in.

What is the area of the circle?

• 15.7 cm²
• 78.5 cm²
• 31.4 cm²
• 5 cm²

Sally tried to solve for the area of circle. Her work is shown. What mistake did Sally make.

• Sally squared π incorrectly.

• Sally multiplied the π and radius incorrectly.

• Sally used diameter instead of the radius.

• No mistake. Sally solved the problem correctly.

Find the area of the circle

• 56.52
• 254.34
• 1017.36
• 113.04

Mrs. Apple just bought a new dinning room table. She needs to make a table cloth for decoration. What amount of fabric should she buy if the table has a diameter of 5 feet? Choose the equation that would best help solve this problem.

• C = π5
• C = (2)(π)(2.5)
• A = π5²
• A = π2.5²

 A glass stained window is shaped like a semicircle. The bottom edge of the window is 36 inches long. How much colored glass would you need to cover the stained window? Round to the nearest hundredth.

• 1017.36 in²
• 508.68 in²
• 56.52 in
• 113.04 in

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

• A = π·d

• C = 2·π·r

• A = π·r²

• C = π·d