Q69 of 125 Page 38

A rule for finding the approximate length of diagonal of a square is to multiply the length of a side of the square by 1.414. Find the length of the diagonal when :

a) The length of a side of the square is 8.3 cm.


b) The length of a side of the square is exactly 7.875 cm.

a) Length of side of square = 8.3 cm


Length of diagonal = Length of square × 1.414


⇒ Length of side = 8.3 × 1.414 = 11.74 cm


b) Length of side of square = 7.875 cm


Length of diagonal = Length of square × 1.414


⇒ Length of side = 7.875 × 1.414 = 11.14 cm


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