Grade 12th pass10 grade maths
A water tank as the shape of an inverted right circular cone, whose semi-vertical angle is tan−1(1/2). Water is poured into it at a constant rage of 5 cubic meter per minute. The rate (in m/min), at which the level of water is rising at the instant when the depth of water in the tank is 10m is
2/π
1/5π
1/10π
1/15π
A water tank as the shape of an inverted right circular cone, whose semi-vertical angle is tan−1(1/2). Water is poured into it at a constant rage of 5 cubic meter per minute. The rate (in m/min), at which the level of water is rising at the instant when the depth of water in the tank is 10m is
2/π
1/5π
1/10π
1/15π
