Question

6) The perimeter of a field is 520 m. If the breadth of the rectangle is 40m. Find it's
length? *​

Answer 1

l =?
b = 40m
Perimeter= 520m

Perimeter = 2(l+b)
520=2(l+40)
520/2 = l+40
260=l+40
260-40=l
220= l

Ans.) length of the rectangle is 220m

Answer 2

Answer:

Step-by-step explanation:

Perimeter of rectangle $=2 (l + b )$

                                  $=> 520 = 2 l + 80$

                                  $=> 520 - 80 = 2 l$

                                 $=> \frac{440}{2} =l$

                                 $=> l=220 m$

Then,

Area of rectangle = l × b

                           = 220 × 40

                           = 8800m²