# Example 18 - Chapter 11 Class 7 Perimeter and Area

Last updated at Dec. 6, 2021 by Teachoo

Last updated at Dec. 6, 2021 by Teachoo

Transcript

Example 18 Diameter of a circular garden is 9.8 m. Find its area. Diameter = 9.8 m Radius = r = ๐ท๐๐๐๐๐ก๐๐/2 = 9.8/2 = 98/20 = 49/10 m Area of circle = ๐r2 = 22/7 ร (49/10)^2 = 22/7 ร 49/10 ร 49/10 = 22/1 ร 7/10 ร 49/10 = (154 ร 49)/100 = 7546/100 = 75.46 m2 โด Required Area is 75.46 m2

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About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.