Question

Find the curved surface area of a cone with base radius 5.25 cm and slant height 10cm

Answer 1

Given :- cone

           R = 5.25 cm

           L = 10 cm

C.S.A of cone = πrl

= 22/7×5.25×10

= 22×0.75×10

= 22×7.5

= 165

therefore, the C.S.A of cone is 165 cm²

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