l+ b+ h = 20 Diagonal =12 Diagonal = √ l2+b2+h2 (l+ b+ h)2 = l2+b2+h2+ 2(l b+ b h +h l) (20)2 = (12)2 +2(l b+ b h +h l) 400 = 144 +2(l b+ b h +h l) 2(l b+ b h +h l) = 400-144=256 Total surface area of cuboid =256
Two trains of equal lengths take 20 seconds and 30 seconds respectively to cross a telegraph post. If the length of each train be 240 metres, in what ti...
Train ‘A’ running with a speed of 18 km/h crosses a pole in 8 seconds. If the time taken by train ‘A’ to cross train ‘B’ running with a spee...
A train takes 10 seconds to pass a tree and 14 seconds to pass through a tunnel 112 meters long. A bike is moving in the same dir...
Train M, ‘x’ metres long crosses (x – 32) metres long platform in 20 seconds while train N having the length (x + 32) metres crosses the same plat...
A man running at the speed of 6 kmph was over taken by the train moving with the speed of 42 kmph in 26 seconds. Find the length of train.
Train P travelling at 62 km/hr crosses another train Q, having three fourth of its length and travelling in opposite direction at 28 km/hr in 14 seconds...
A freight train requires 17.6 seconds to pass a stationary person and 28 seconds to traverse a 260-meter-long tunnel. Simultaneously, a motorcycle can c...
A train running at a speed of 90 km/h crosses a bridge in 45 seconds. If the length of the train is x meters, and length of the bridge is (6x+75) meters...
Two trains, each 140 meters long, are running in opposite directions. If the speed of one train is twice that of the other and they take 18 seconds to c...
A train running at 25 km/hr takes 36 seconds to pass a platform. Next, it takes 14 seconds to pass a man walking at 7 km/hr in the same direction. Find ...
