Question

If the height and slant height of a cone are 21cm and 28cm respectively. Find its volume

Answer 1

Answer:

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Step-by-step explanation:

Given:

The height of cone , h = 21 cm

The slant height , l = 28 cm

To find:

The volume of cone

Solution:

Volume of the cone ,V = 1/3 pie r^2 h

We know that,

r^2 = l^2 - h^2

= 28^2 - 21^2

= 784 - 441

r^2 = 343 cm

Volume, V = 1/3 ×22/7×343 ×21

V = 703 cm^3

The volume of the cone is 703cm^3

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