Question

Given height = 3cm,radius = 4cm. Find the curved surface area of a cone

Answer 1

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Here is your answer---

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Given---

Height (h) = 3 cm.
Radius (r) = 4 cm.

For the Slant Height (l),
 
   Using the Formula,
              (l)^2 = (r)^2 + (h)^2
               (l)^2 = (4)^2 + (3)^2
                (l)^2 = 16 + 9
                  (l)^2 = 25
                      l = √25
                      l = 5 cm.

For the Curved Surface area,
   Curved Surface Area = Pie × r × l
                                      = (22/7) x 4 x 5
                                      = 440/7
                                      = 62.86 cm^2

Thus, Curved Surface area of the Cone is 62.86 cm^2.

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