Mathematics
A right triangle with sides 6 cm, 8 cm and 10 cm is revolved about the side 8 cm. Find the volume and the curved surface of the cone so formed. (Take π = 3.14)
Mensuration
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Answer
Since, triangle is revolved about 8 cm side so,
h = 8 cm, r = 6 cm and l = 10 cm.
Volume of cone =
Putting values in equation we get,
Volume of cone =
=
= 301.44 cm3.
Curved surface area = πrl.
Putting values in equation we get,
Curved surface area = 3.14 × 6 × 10 = 188.4 cm2.
Hence, the volume of cone = 301.44 cm3 and curved surface area = 188.4 cm2.
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