Question

find the curved surface area and total surface of a cone whose height is 28cm and diameter is 42​

Answer 1

Answer:

2307.9

Explanation:

π‧r‧l. is formula to calculate csa of cone

L =$\sqrt{h^{2}+r^{2}$

diameter= 42

radius = 42 divided by 2 = 21cm

L= $\sqrt{28*28*21*21$

L=$\sqrt{1225$ = 35

csa = 3.14 * 21 * 35

=2307.9

Answer 2

Explanation:

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