What will be the length of the diagonal of that square plot whose area is equal to the area of a rectangular plot of length 45 metres and breadth 40 metres ?

A. 45.5 metres

B. 60 metres

C. 75 metres

D. Data inadequate

E. None of these

Answer: Option B

Solution(By Examveda Team)

$$\eqalign{ & {\text{Area :}} \cr & = \left( {45 \times 40} \right){m^2} \Leftrightarrow \frac{1}{2} \times {\left( {{\text{Diagonal}}} \right)^2} \cr & = 1800\,\,\,\, \Leftrightarrow \,\,\,\,{\text{Diagonal}} \cr & = 60\,\,m \cr} $$