Question

If the breadth of a rectangle is 65 m and the perimeter 390 m find the length of the rectangle

Answer 1

Answer: Length = 130m

Explanation :-

$breadth \: = 65m \\ perimeter \: = 2(l + b) \\ 2(l + b) = 390 \\ 2(l + 65)m = 390 \\ 2l + 130 = 390 \\ 2l = 390 - 130 \\ 2l = 260 \\ l = \frac{260}{2} \\ l = 130 \\ length = 130m$

Answer 2

Hi friend!

Here is your answer :

Perimeter of a rectangle is 2( l + b)

Given,

2× (l + 65) = 390

2l + (2×65 ) = 390

2l + 130 = 390

2l = 390 - 130

= 260

Therefore,

l = 260 ÷ 2

130

The length is 130 m.

Hope it helps you.