RRB Assistant Loco Pilot and Technician Model Paper 8 with solutions

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Question : 14 of 75

Marks: +1, -0

The circumference of the base of a 9 m high cone is 44 m. The volume of the cone is

$1386\ m^3$
$198 \m^3$
$154 \m^3$
$462 \m^3$

Solution:

Vol. of cone =

1/3πr^2h

2πr = 44
∴ r =

44/2⋅ 7/22

= 7
∴ Vol =

1/3 ·22/7

× 7 × 7 × 9 =

462 \m^3

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