7. A rectangle and a square have the same perimeter of80 m. If the len

1.	7. A rectangle and a square have the same perimeter of80 m. If the length of the rectangle is 6 m more thanthe breadth, find the area of the rectangle.
Answer» Ans- PERIMETER of rectangle = perimeter of square If, perimeter = 80m LENGTH of rectangle = x+6 Breadth of rectangle = x Perimeter of rectangle = 2(l+b) = 2 × ( x+ 6 +x ) = 2× 2x + 6 = 4x + 12 = x = 12/4 = 3 length= x+6 = 3+6 = 9 breadth = 6 Area of rectangle = l×b = 9×6 = 54sq.m

7. A rectangle and a square have the same perimeter of80 m. If the length of the rectangle is 6 m more thanthe breadth, find the area of the rectangle.

Answer»

Ans- PERIMETER of rectangle = perimeter of square

If, perimeter = 80m

LENGTH of rectangle = x+6

Breadth of rectangle = x

Perimeter of rectangle = 2(l+b)

= 2 × ( x+ 6 +x )

= 2× 2x + 6

= 4x + 12

= x = 12/4 = 3

length= x+6 = 3+6 = 9

breadth = 6

Area of rectangle = l×b

= 9×6 = 54sq.m