Question
The radius of a circle is equal to the radius of base of
a cone. If the diameter of the circle is 35 cm and the height of cone is 18 cm, then find the volume (in cm3) of the cone.Solution
Radius of circle = radius of the cone = 35/2 = 17.5 cm Volume of cone = π × (radius2) × (height/3) = (22/7) × 17.5 × 17.5 × (18/3) = (121275/21) = 5775 cm3
If a river is flowing at a rate of 6 km/hr and a boat's speed in still water is 100% higher than the river's speed, and the boat travels 'd' kilometers ...
A Boat travel 80 km distance in downstream and 48 km upstream and the total time taken is 20 hours. The same boat travels 30 km distance in downstream a...
The speed of the boat in still water is 12 km/hr and the speed of the stream is 9 km/hr. A boat goes 105 km downstream with its usual speed but at the t...
The downstream speed of a boat is 4 km/hr more than its upstream speed and the ratio of the speed of the boat in still water to the speed of the stream ...
A boat travels the same distance 'd' km in both upstream and downstream directions, taking a total of 15 hours for the round trip. If the downstream spe...
A boat goes 220 km downstream in 11 hours, and 135 km upstream in 15 hours. The speed of the stream is
A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 5 hour to row to a place and come back, how far is the place?
If a man rows at the rate of 14 kmph in still water and his rate against the current is 5 kmph, then the man’s rate along the current is:<...
- A boat takes a total of 6 hours to travel 45 km downstream and 30 km upstream. In another scenario, the same boat takes 8 hours to cover 60 km upstream and...
A man can row at 36 km/hr in still water. In a stream which is flowing at 12 km/hr, it takes him 3 hrs to a place and back. How far is the place?
Relevant for Exams:
