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The Area of a Circle is 98.56 Cm2. Find Its Circumference. - Mathematics

Sum

The area of a circle is 98.56 cm2. Find its circumference.

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Solution

Let the radius of the circle be r.

Now.

Area = 98.56

⇒ πr2 = 98.56

`⇒ 22/7xx"r"^2 = 98.56`

⇒ r = 5.6

Now,

Circumference `=2pi"r"=2xx22/7xx5.6=35.2  "cm"` 

Hence, the circumference of the circle is 35.2 cm.

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APPEARS IN

RS Aggarwal Secondary School Class 10 Maths
Chapter 18 Area of Circle, Sector and Segment
Exercise 18A | Q 2 | Page 831
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