4.The area of a circle is about 314.1593 in?. Find its circumference and round to the nearest tenth. A. Find its radius. B.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter10: Measurement, Area, And Volume
Section10.4: Circumference And Area Of A Circle
Problem 25E
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4. The area of a circle is about 314.1593 in?.
Find its circumference and round
to the nearest tenth.
A.
Find its radius.
В.
5. The figure below shows a circle inside of a square. The radius of the circle is 8 cm. Use the pi key
and round to the nearest whole number.
А.
What is the circumference of the circle?
В.
What is the area of the circle?
C.
What is the area of the square?
Transcribed Image Text:4. The area of a circle is about 314.1593 in?. Find its circumference and round to the nearest tenth. A. Find its radius. В. 5. The figure below shows a circle inside of a square. The radius of the circle is 8 cm. Use the pi key and round to the nearest whole number. А. What is the circumference of the circle? В. What is the area of the circle? C. What is the area of the square?
Expert Solution
Step 1

Given area of the circle is 314.1593 inch2.

We need to find the radius of the circle.

Let the area of the circle is πr2 where r is the radius of the circle.

πr2=314.1593(3.14)r2=314.1593r2=314.15933.14=100.0507r=10 inch

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