A right triangle ABC with sides 5 cm, 12 cm and 13 cm is rotated about the side of length 5 cm. Find the volume of the solid so obtained. Please answer correctly
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Let hypotenuse =13cm
Given,
→ triangle revolves around 12cm
→radius=5cm
→height=12cm
→volume=1/3π×r^2×H
→volume=1/3×π×5×5×12
⇒vol.=100πcm ^3 (nearly)
second case,
→r=12cm
→h=5cm
→vol.=1/3×π×12×12×5
⇒vol.=240 πcm^3
→The ratio is 100/240 = 5/12.
Hence , ratio is 5:12.
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