Question

the perimeter of a rectangular field is three fifth kilometre. if the length of the field is twice its width find the area in square metres​

Answer 1

Answer:

length =1/5km, width =1/10km

Step-by-step explanation:

let the width be x and length be 2x

perimeter =2(2x+x)

=2(3x)=6x

but given perimeter = 3/5km

so , 6x=3/5

x=3/5 × 1/6

x=1/10

therefore width =x=1/10km

and length =2x=1/5km

Answer 2

Answer:

perimeter of a rectangular field =3/5 km =0.6km

let the breadth be x

let the length be 2x

2(l+b)=p

or, 2(2x+x)=0.6

or, 4x+2x=0.6

or, 6x=0.6

or, x=0.6/6

: x=1/10

b=1/10

l= 2*1/10=1/5

area of a rectangular field = l*b

=1/10*1/5

=1/50ans