anyone genius here?? solve 8th one
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Given, OA = 21cm and AB = 14cm
Hence, Area cleaned by the wiper = [60/360 x 22/7 x 35 x 35] - [60/360x22/7x21x21]
= 1232/3 = 410.67cm²
Length of the large arc = 60/360 x 2 x 22/7 x 35 = 110/3 cm
Length of the small arc = 60/360 x 2 x 22/7 x 21 = 22cm
∴ Perimeter of the region cleaned by the wiper = 14 + 14 + 22 + 110/3
= 50 + 36.67 = 86.67cm
Hence, Area cleaned by the wiper = [60/360 x 22/7 x 35 x 35] - [60/360x22/7x21x21]
= 1232/3 = 410.67cm²
Length of the large arc = 60/360 x 2 x 22/7 x 35 = 110/3 cm
Length of the small arc = 60/360 x 2 x 22/7 x 21 = 22cm
∴ Perimeter of the region cleaned by the wiper = 14 + 14 + 22 + 110/3
= 50 + 36.67 = 86.67cm
hastidDobariya:
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no i am beginner. ......bit ans can .... 86.70 ansssssss
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