Question

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

(a) 1760 cm²

(b) 2240 cm²

(c) 880 cm²

(d) 3120 cm²

Answer 1

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

C.S.A. of bucket

= $1760c{m}^2$

Hence, the correct answer is choice (a).