Question

the perimeter of a rectangle is 82 m and it's area is 400 m2 the breadth of the rectangle is​

Answer 1

Answer:

l=76.79,b=5.2

Explanation:

area=l*b

perimeter=l+b

Answer 2

Answer:

Explanation:

Correct Question :-

The perimeter of a rectangle is 82 m and its area is 400 m². Find the breadth of rectangle.

Answer :-

Solution :-

Here, Perimeter = 2(l + b) = 82 m.

⇒ l + b = 41 m

Let the length be x m,

And the breadth be 41 - x m.

Area = l × b = 400 m²

⇒ x(41 - x) = 400

⇒ 41x - x² = 400

⇒ x² - 41x + 400 = 0

⇒ (x - 6) (x - 25) = 0

⇒ x = 16, 25

If length = 16 m, then

Breadth = 25 m

If length = 25 m, then

Breadth = 16 m