A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved abou

1.	A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cmFind the volume of the solid so obtained.1.
Answer» Let hypotenuse =13cmgiven triangle revolves around 12cmradius=5cm height=12cmvolume=1/3π×r^2×Hvolume=1/3×π×5×5×12vol.=100πcm ^3 (nearly) second case,r=12cmh=5cmvol.=1/3×π×12×12×5vol.=240π cm^3 the ratio is 100/2405:12

A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cmFind the volume of the solid so obtained.1.

Answer»

Let hypotenuse =13cmgiven triangle revolves around 12cmradius=5cm height=12cmvolume=1/3π×r^2×Hvolume=1/3×π×5×5×12vol.=100πcm ^3 (nearly)

second case,r=12cmh=5cmvol.=1/3×π×12×12×5vol.=240π cm^3

the ratio is 100/2405:12