Question

a right triangle abc with sides 5cm 12cm 13cm 8s rotated about the side 12 cm find the volume of the air displaced by the triangle​

Answer 1

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let hypotenuse =13cm

given triangle revolves around 12cm

radius=5cm

height=12cm

volume=1/3PI×r^2×H

volume=1/3×PI×5×5×12

vol.=100PIcm ^3 (nearly)

second case,

r=12cm

h=5cm

vol.=1/3×PI×12×12×5

vol.=240PI cm^3

the ratio is 100/240

5:12