aluminum
aluminum
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r^2 + 7 = p So, r^2 = p - 7 So, r = sqrt.(p - 7)............Ans 1. radius, r = 21 cm Circumference, C = 2 x pi x r = 2 x 21 / 7 x 21 = 126 cm = 1.26 m Distance travelled = 66m Number of revolutions = 66 / 1.26 = 52.38 Therefore the wheel …