Question

the curved surface area of a cone is 4070cm^2and its diameter is 70cm. what is its slant height? ​

Answer 1

Given:

curved surface area of cone=4070sq.cm

diameter = 70cm

radius(r) = 70/2

= 35

slant height = ?

we know that,

curved surface of cone =πrl

4070 = 22/7 . 35 . l

4070×7/22×35 = l

4070/22×5 = l

4070/110 = l

37 =l

therefore,

slant height = 37cm

Answer 2

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