Question

In a rectangle, difference between length and breadth is 7 cm. If length of its diagonal is 13 cm,
then find the area of the rectangle.​

Answer 1

Answer:

A≈76.68cm²

Step-by-step explanation:

Answer 2

Answer:

Correct answer is 60 cm^2

Step-by-step explanation:

Let breadth= x , length = x+7

13 is the hypotenuse

13^2 = (x+7)^2+x^2

169= x^2+14x+49+x^2

2x^2 +14 x - 120 = 0

2( x^2+7x-60)=0. (2≠0)

x^2+7x-60=0

(x-5) (x+12) =0.

x=5. x=-12. (x≥0)

Therefore x= 5

5(5+7) = 60..

=60 cm^2 ✔︎✔︎✔︎✔︎✔︎