Question
A right triangle ABC with sides 5 cm ,12cm and 13cm is
revolved about the side 12 cm. What is the volume of the solid so obtained?Solution
R = 5cm h= 12cm volume of the cone = 1/3 Ļr2 h = 1/3 Ļ Ć25Ć12 = 100 Ļ cm3
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