The diagonal of a rectangle is 20 cm. If its breadth is 12 cm, then what will be its length?
Answer & explanation
Correct answer: option 2
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