Ex 9.2, 2 (b) - Chapter 9 Class 7 Perimeter and Area
Last updated at Dec. 16, 2024 by Teachoo
Last updated at Dec. 16, 2024 by Teachoo
Ex 9.2, 2 Find the area of the following circles, given that: (b) diameter = 49 mDiameter = 21 cm Radius = r = ๐ท๐๐๐๐๐ก๐๐/2 = ๐๐/๐ m Now, Area of circle = ๐ r2 = ๐๐/๐ ร (๐๐/๐)^๐ = 22/7 ร 49/2 ร 49/2 = 11/7 ร 49/1 ร 49/2 = 11/1 ร 7 ร 49/2 = (77 ร 49)/2 = ๐๐๐๐/๐ = 1886.5 m2 โด Required area is 1886.5 m2
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