Question

the length of a rectangle is 6 times its breadth. the perimeter of the rectangle is 294cm .find the length and breadth of the rectangle

Answer 1

Let the breadth of the rectangle be x.

Then the length will be 6x.

Given that perimeter of the rectangle = 294.

We know that perimeter = 2(l+b).

                    2(6x + x) = 294

                    2 * 7x = 294

                      14x = 294

                        x = 21.

Substitute x = 21 in (2) , we get 6x = 6 * 21 = 126.

Therefore the length of the rectangle = 126 cm and breadth = 21 cm.

Answer 2

Hey!!

Given,
Perimeter of rect. = 294
Let the breadth be x.
Length = 6x

We know,
Perimeter = 2(l+b)
294 = 2(6x + x)
294/2 = 7x
147 = 7x
147/7 = x
21 = x
or x = 21.

Hence,  the length of rect. = 6x = 6 x 21 = 126 cm
             the breadth of rect. = x = 21 cm