The radii of the ends of a bucket 16 cm height are 20 cm and 8 cm. The curved surface area of the bucket is

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Radius of top of bucket r1 = 20 cm Radius of bottom of bucket r2 = 8 cm Height of bucket = 16 cm The curved surface area of bucket = pi (r_1 +r_2) l l = sqrt(h^2 + (r_1 +r_2)^2) = sqrt(16^2 + (20 - 8)^2) =sqrt(256 + 144) l = sqrt400 l = 20 "cm" C.S.A. of bucket = pi (20 + 8) xx 20 = $\frac{22}{7}$ xx 28 xx 20 =22 xx 80 = 1760 \ cm^2

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