Question
Find the length of the diagonal of a cube with volume
81√3 cm³?Solution
Let side of the cube be a cm then Volume of Cube = a3  So a3 = 81√3  a3 = 27 × 3√3  a3 = 33 × (√3)3  a3 = 33 × (√3)3  a = 3√3  Diagonal of cube = a√3 = 3√3 (√3) =9 cm
‘A’ and ‘B’ started moving towards each other at same time with a speed of 22 km/hr and 14 km/hr, respectively. If the distance covered by ‘A�...
- A dog sees a rabbit 75 meters away and begins chasing it. The rabbit runs at 14 m/sec, while the dog runs at 20 m/sec. How much time will it take for the d...
A and B move towards each other at the same time at the speeds of 15 km/h and 25 km/h, respectively and the distance between them is 60 km. How much is ...
Aman takes 36 minutes more than Sudhanshu to cover 130 km. If Aman doubles his speed, he takes 42 minutes less than Sudhanshu to cover the same distance...
- Neha and Sneha went for a morning walk from their home to a nearby park. Neha walks faster, and their speed ratio is 6:5. If Sneha takes 1 hour longer than...
It takes 12 hours less to travel from point 'C' to point 'D' at a speed of 50 km/h than it takes to travel the same distance at 20 km/h. If 50% of the d...
A train overtakes two persons walking along a railway track. The first one walks at 3.2 Km/h. The other one walks at 4.5 Km/h. The train needs 5.5 and 5...
A mother left her child at Bus stop 'P' in a bus station at 6:00 a.m. Four hours later, a bus departed from Bus stop 'Q' to Bus stop 'P' and passed the ...
A car can finish a certain journey in 10 hours at a speed of 42 kmph. In order to cover the same distance in 7 hours, the speed of the car (km/h) must b...
 A, B, and C run around a Circular track starting from the same point simultaneously and in the same direction at 6 km/h, 12 km/h, and 18 km/h respect...
Relevant for Exams:
