Ex 9.2, 15 - 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, 15 Find the circumference of the inner and the outer circles, shown in the adjoining figure? (Take ฯ = 3.14) Outer circle Radius of outer circle = R = OB = 19 m Circumference of outer circle = 2๐R = 2 ร 3.14 ร 19 = (2 ร 314 ร 19)/100 = ๐๐๐/๐๐๐ ร 19 = 11932/100 Inner circle Radius of inner circle = 19 โ 10 = 9 cm Circumference of inner circle = 2๐r = 2 ร 3.14 ร 9 = 2 ร 314/100 ร 9 = ๐๐๐/๐๐๐ ร 9 = 5652/100 = 56.52 m โด Circumference of outer circle is 119.32 m & Circumference of inner circle is 56.52 m
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