If the length of the diagonal of a square is increasing at the rate of 0.1 cm/sec what is the rate of increase of its area when the side is (15)/(sqrt2) cm?
A chess board contains 64 equal squares and the area of each square is 6.25cm^(2) . A border round the board is 2cm wide find its side.
Find the diagonal of a rectangle whose length is 16 cm and area is 192 sq. cm. square ABCD is a rectangle (ii) AB = 16 cm (iii) A( square ABC) = 192 sq. cm
