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The total surface area of a hemisphere = 3πr². Given, r = 10 cm. Total surface area = 3π * (10)² = 3π * 100 = 300π square centimeters.
‘A’ and ‘B’ started moving towards each other at same time with a speed of 25 km/hr and 15 km/hr, respectively. If the distance covered by ‘Aâ...
Buses start from a bus terminal with a speed of 10 km/hr at intervals of 8 minutes. What is the speed of a boy coming from the opposite direction toward...
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 ...
Two trains starts at the same time from Spain and France towards each other with a speed of 160km/hr and 190 km/hr. When they meet, the faster train cov...
Excluding the Stoppages i.e. Non-stop, the speed of a Bullet train is 810 km/h and including the stoppages, it is 720 km/h. Calculate for how many minut...
A bus covers a certain distance without stopping at an average speed of 50 km/h. But when it covers the distance intermittently. So its average speed is...
A car running with a speed of 65 km/hr takes 12 hours to go from 'A' to 'B'. If on the way back from 'B' to 'A', the car takes 20% less time than it tak...
A car travels at a speed of 90 km/h and takes 4.5 hours to cover a specific distance. A train can cover the same distance in 3 hours. If the speed of th...
Anju's journey comprises three segments. He travels the first 'd - 30' km at a speed of 12 km/h, the next 'd' km at a speed of 30 km/h, and finally, she...
A train covers a certain distance at a speed of 36 km/h and the next same distance with a speed of 45 km/h and the next same distance with a speed of 60...
