Question

The lenghth of rectangular field is twice its breadth of the perimeter of the field is 150 meter. class 7 sollution

Answer 1

let the breadth of rectangular field be X m,then its length will be 2X m
we know that,
perimeter of rectangle = 2 ( l + b )
therefore , 2(2X+X)=150
6X= 150
X=25
length =2X = 2×25=50m
breadth =25 m

Answer 2

A rectangle is a closed figure of four sides. Opposite sides are parallel and equal.

Let the length of the rectangle be x meters

Then the breath will be 2x meters.

$As \: we \: know \: that \: \\ perimeter \: of \: a \: rectangle \\ = 2(length \: + breath)$

We have given the perimeter of the rectangle is 150 meters.

Inserting this value in the formula we get.
$\: \: \: \: \: \: \: \: \: 150 = 2(x + 2x) \\ \\ = >150 = 6x \\ \\ = > x = 25$

Now we have length = 25 meters ,and
breath = (25×2) meters
= 50 meters .

Area of the rectangle = length × breath.

$Area \: = (25 \times 50) \: meters \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: = 1250 \: meters$