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McGraw Hill Integrated II, 2012 View details

1. Circles and Circumference

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Exercise 32 Page 720

Start by finding the diameter of the circle.

25π mm

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Before we can find the circumference of the circle, notice that its diameter is equal to the length of the circumscribed polygon, which is a square.

Knowing that the diameter is 25 millimeters, we can substitute it in the formula for the circumference of a circle and simplify.

C=π d

Substitute

d= 25

C=π ( 25)

Multiply

C=25π

The circumference of the circle is 25π millimeters.

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Exercises p.719-723

Exercise 32 Page 720

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