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Chapter 1: Q11. (page 25)

Find the circumference of each circle. Round to the nearest tenth.

Short Answer

Expert verified

The circumference of the circle is 31.4 in.

Step by step solution

01

Step 1. Given information.

The circle has a diameter of 10 inches.

02

Step 2. Circumference of the circle.

The circumference of a circle with radius r units is denoted by C=2πr.

03

Step 3. Calculations.

In the figure, the circle has a diameter of 10 inches,

Since, the radius is half of the diameter,

So, the radius of a circle is calculated as,

r=102in.=5in.

The circumference of a circle

C=2πr=2·227·5=31.428in.

Rounding off to the nearest tenth,

C=31.4in.

Thus, the circumference of the circle is 31.4 in.

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