Question

Find the csa and volume of the cone whose diameter is 12cm and the height is 22cm.

Answer 1

Answer:

$\huge \purple {Answer:-}$

Diameter = 12cm

Radius = 12/2 = 6cm

Height = 22cm

we know that l^2 = r^2 + h^2

l^2 = 6^2 + 22^2

l^2 = 36+484

l^2 = 520

l= √520

l= 22.80351 or 22.8 (approx.)

CSA of the cone = πrl

CSA of the cone = 22/7 * 6 * 22.8

CSA of the cone = 429.95sq.cm (approx.)

Volume of the cone = πr^2h/3

Volume of the cone = 22/7 * 6^2 * 22/3

Volume of the cone = 829.71sq.cm or 830sq.cm (approx.)

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