Question

A rectangular field is $40m$ long and $30m$ broad. Find the length of its diagonal.

• A. $50m$
• B. $60m$
• C. $70m$
• D. $80m$

Answer 1

The correct option is A $50m$

Length $\left(l\right)=40m$
Breadth $\left(b\right)=30m$

For a rectangular field, diagonal $\left(d\right):$
$d^2=l^2+b^2$

$d^2={40}^2+{30}^2$

$d^2=1600+900$

$d^2=2500$

$d=50$ m