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Let the length of the edges of the two cubes be ‘a’ cm and ‘b’ cm, respectively According to the question, 6a2 + 6b2 = 1512 Or, a2 + b2 = 1512/6 = 252 And, ab = 113.5 Using the formula, x2 + y2 = (x – y)2 + 2xy 252 = (a – b)2 + 2 × 113.5 Or, (a – b)2 = 252 – 227 Or, (a – b)2 = 25 Or, a – b = ±5 So desired difference = 5 cm
A pen whose cost price is Rs 16 is marked a sale price 25% higher. It is then discounted by 25%. The net price of the pen is
Match List I with List II
Lightning is seen before thunder because
EVM Stands for __________.
If * is an operation such that a * b = 3a – 4b. find the value of 3*4
A cut on the palm heals faster than that on the knee because
In two years, half the tiles fall off from a wall. How many years will it be when 75% of the tiles have fallen off?
A ray of light hits a mirror and is reflected. If the mirror rotates by an angle 10° in one direction, then the reflected ray will rotate by
If the area and sum of parallel side of a trapezium are 48 cm² and 48cm respectively. Then the distance between the parallel sides is
How many pairs of squares in a chess board share exactly one corner?
