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 Interactive Checkpoint
 Pi:  The ratio of the circumference of a circle to its diameter.

Use the diagram at the right to answer the following questions about pi.

Type the word pi to represent . For example, if your answer was 20, then input 20pi into the text area.

 

Enter each answer below and press tab to check.

Graded Response

a) What is the circumference of the circle in terms of pi?

 

a) cm

b) What is the area of the circle in terms of pi?

 

b) cm2
c) A circular sprinkling system covers 10 square meters of lawn with water. If water travels at the edge of the circle at a rate of 1 meter per second, how long does the sprinkler take to get around once? Round your answer to the nearest tenth of a second. c) sec