Question

nisha has plot of land that has been fenced with 300m long wires .find the dimension of the plot if its length is twice the breadth

Answer 1

let the breadth be x

length = 2x

Perimeter = 300m

we know,

$perimeter \: = 2(l + b)$

$300 = 2(x + 2x)$

$\frac{300}{2} = 3x$

$150 = 3x$

$x = \frac{150}{3}$

$x = 50$

so,

length = x = 50m

breadth = 2x = 2 × 50 = 100m

Answer 2

Perimeter of plot =2(l+b)=300
and
l=2b
So 2(2b+b)=300
6b=300
b=50
l=2b=100
I think it is right answer