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 Challenge Exercises: Circumference and Area Unit 2 > Lesson 5 of 6

 Directions: Read each question below. Click once in an ANSWER BOX and type in your answer; then click ENTER. After you click ENTER, a message will appear in the RESULTS BOX to indicate whether your answer is correct or incorrect. To start over, click CLEAR. Use = 3.14 to calculate your answers.

 1 A dinner plate has a radius of 6 centimeters. What is the area? ANSWER BOX: cm2 RESULTS BOX:

 2 The distance around the wheel of a truck is 9.42 feet. What is the diameter of the wheel? ANSWER BOX: ft RESULTS BOX:

 3 A lawn sprinkler sprays water 5 feet in every direction as it rotates. What is the area of the sprinkled lawn? ANSWER BOX: ft2 RESULTS BOX:

 4 What is the circumference of a 12-inch pizza? ANSWER BOX: in RESULTS BOX:

 5 A dog is tied to a wooden stake in a backyard. His leash is 3 meters long and he runs around in circles pulling the leash as far as it can go. How much area does the dog have to run around in? ANSWER BOX: m2 RESULTS BOX:

 6 The distance around a carousel is 21.98 yards. What is the radius? ANSWER BOX: yd RESULTS BOX:

 7 A storm is expected to hit 7 miles in every direction from a small town. What is the area that the storm will affect? ANSWER BOX: mi2 RESULTS BOX:

 8 An asteroid hit the earth and created a huge round crater. Scientists measured the distance around the crater as 78.5 miles. What is the diameter of the crater? ANSWER BOX: mi RESULTS BOX:

 9 A semi-circle shaped rug has a diameter of 2 feet. What is the area of the rug? ANSWER BOX: ft2 RESULTS BOX:

 10 A spinner has 6 sectors, half of which are red and half of which are black. If the radius of the spinner is 3 inches, what is the area of the red sectors? ANSWER BOX: in2 RESULTS BOX:

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