Question

Perimeter of a rectangle is 120m. If the length is 40m, find its area.​

Answer 1

Answer:

It’s 20

Step-by-step explanation:

Answer 2

given perimeter of rectangle = 120m

length of rectangle = 40m

let breadth of rectangle = X

Area of rectangle = ?

perimeter of rectangle = 2( l + b )

120 = 2 ( 40 + X )

$\frac{120}{2} = 40 + \: x$

60 = 40 + X

60 - 40 = X

20 = X

so, the breadth of rectangle = 20m

Area of rectangle = length × breadth

= 40m × 20m

$800 {m}^{2}$

so the area of rectangle will be 800meter square