the curved surface area of a right circular cone is 12320cm^2 if the radius of its base is 56 cm find its height.

Answers 2

Given:

radius of the base of the cone =56cm

We know that curve d surface area of a cone=πrl.

Given that curved surface area of a cone=12320.

πrl=12320

22/7∗56∗l=12320

22∗8∗l=12320

176∗l=12320

l= 12320/176 = 70

We know that height of the cone,

h=√12 - r²

= √702-562

= 4900-3136

= √1764

=42.

Therefore the height of the cone = 42m.

Answer:

Your answer. is 42cm..

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