Question

In a cone l=10cm,r=5 then find the csa of a cone.

Answer 1

Answer:

Given,

Length (l) = 10 cm

Radius (r) = 5 cm

To find,

CSA of a cone = ?

So,

CSA of a cone = pie × l × r

= 22/7 × 10 × 5

= 1100/7

= 157.142 cm^2

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Answer 2

Answer:

CSA of cone  = 157 cm²

Step-by-step explanation:

CSA of cone = πrl

                     = 3.14 x 5 x 10

                     = 3.14 x 50

                     = 157 cm²

∴ CSA of cone  = 157 cm²

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