Question

2. The length of a rectangular park is twice its breadth, and its perimeter
measures 0.84 km. Find the area of the park in square metres.​

Answer 1

Answer:

0.84 km=84*1000/100=840m

Length of rectangular park,

Breadth of rectangle=2b

Perimeter=2(3b)=840

b=840/6=140m

Area=280*140

39200m^2

Answer 2

Answer:

Step-by-step explanation:

Let the breadth of a rectangular park be x

Then it's length=2x

Perimeter =0.84 km =840meter

Now,

2(2x + x) =840 meter

4x+2x=840 meter

6x=840meter

x=840 meter/6

x=140 meter

Thus, breadth=140meter and length=2×140meter=280meter

Then,

Area of the rectangular park= l×b

=140meter × 280meter

=39200meter^2