Maths-
General
Easy
Question
A triangle having sides equal to 7cm, 24cm and 25cm forms a cone when revolved about 24cm side. What is the volume of a cone formed?
- 1225cm3
- 1232cm3
- 4000cm3
- 3696cm3
Hint:
Volume of a cone = (
)πr2h
The correct answer is: 1232cm3
We have given the dimensions of triangle having sides equal to 7cm, 24cm and 25cm
It is revolved about 24 cm side
Therefore, the cone formed will have dimensions as
Height , h = 24 cm
Radius , r = 7 cm
So, the volume of cone = ()πr2h
= ()(
)(7 x 7)(24)
= 22 x 7 x 8
= 1232 cm3
Therefore, the correct option is b) 1232 cm3
)()(7 x 7)(24)Therefore, the correct option is b) 1232 cm3
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