The diagonal of a rectangle is 20 cm. If its breadth is 12 cm, then what will be its length?

15 cm 16 cm 18 cm 17 cm

16 cm

We know that, (Diagonal)2 = (Length)2 + (Breadth)2 We have, Diagonal = 20 cm Breadth = 12 cm According to the formula, 202 = length2 + 122 = length2 = 400 - 144 = 256 = length = 16 cm