Question

15. A rectangle hasa perimeter of 100meters. The widthis 9 meters, whatis the length?

Answer 1

Given that,

A rectangle has a perimeter of 100 meters.

The width is 9 meters.

To find the length of a rectangle.

we know that,

Perimeter of a rectangle is,

`=2(l+b)`

where l is the length and b is the breadth.

Substitute the values we get,

`100=2(l+9)`
`l+9=50`
`l=50-9`

we get,

`l=41`

Answer is: length of the rectangle is 41 m