The curved surface areas of a cylinder is 176cm^2 and its height is 21cm. Calculate its radius
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1. given;
CSA of cylinder = 176
height= 21cm
radius=?
CSA of cylinder. = 2πrh
176=2×22/7×r×21
176=44/7×21×r
cancel 7 and 21 by 7 table
176=132×r
176/132=r
4/3=r
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