Lesson 6: Circumference and Area of A Circle

The radius of a circular clock is 13 centimeters. What is the area?

• 530.66 cm²

• 81.68 cm²

• 40.84 cm²

• 348.99 cm²

A hula hoop has a diameter of 3 feet. What is its area?

• 18.85 ft²

• 9.42 ft²

• 28.26 ft²

• 7.07 ft²

_{What is the diameter?}

• 5 in

• 10 in

• 3.14 in

• 2.5 in

What is the area of this circle?

• 163.2
• 15.3
• 124.2
• 113.1

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Find the Circumference (round to nearest tenth):
diameter = 10 mi

• 31 mi
• 31.4 mi
  31.4 mi
• 31.5 mi
  31.5 mi
• 62.8 mi

Find the Circumference (round to nearest tenth):
diameter = 4.5 cm

• 14.3 cm
• 14 cm
• 14.1 cm
• 28.3 cm

• 19 units

• 13 units

• 36 units

• 18 units

The most popular size pizza at Pizza Parlor is a large pizza with a 12-inch radius. Which of the following best represents the circumference of this pizza?

• 62.84 inches

• 60 inches

• 75.36 inches

• 452.16 inches

Does 7 inches represent the diameter or radius of the circle?

• Diameter

• Radius