The radius of a cone is 5 cm and vertical height is 12 cm. Find the area of the curved surface.
Answers
Given : Radius of cone (r) = 5 cm
vertical Height of cone (h) = 12 cm
We know that, slant height, l = √ r² + h²
l = √5² + 12²
l = 25 + 144
l = 169
l = 13 cm
Now,
C.S.A of a cone = πrl
= 22/7 × 5 × 13
= 1430/7
= 204.28 cm²
Hence, the curved surface area of the cone is 204.28 cm².
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Answer:
Step-by-step explanation:
We know that, slant height, l = √ r² + h²
l = √5² + 12²
l = 25 + 144
l = 169
l = 13 cm
Now,
C.S.A of a cone = πrl
= 22/7 × 5 × 13
= 1430/7
= 204.28 cm²