'If two circles touch internally, then the distance between their centres is equal to the difference of their radii' explain this with diagram and example.
Find the least number which must be added to each of the following numbers so as to get a perfect square also find the square root of the perfect square so obtained problem is 50022
Two persons manage to push a motorcar of mass 1200 kg at a uniform velocity along a level road. The same motorcar can be pushed by three persons to produce an acceleration of 0.2 m s². With what force does each person push the motorcar? (Assume that all persons push the motorcar with the same muscular effort.)
From the top of a building 50 m high the angles of depression of the top of the bottom of a tower observed to be 30 degrees and 60 degrees find the height of the tower and distance between the building and the tower take √3 is equals to 1.73
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