Question

the lenght of a rectangular park is thrice its breadth.if the perimeter of the park is 168 metres,find its dimensions​

Answer 1

Explanation:

According to question

l=3b

P=2(l+b)

=2(3b+b)

=2(4b)

→8b=168

b=168/8

b=21m

l=3b→l=63m

Answer 2

Answer:

63 metres and 21 metres

Explanation:

Let breadth of rect. be (x) metres then length will be (3x) metres.

Perimeter of rect. = 2(l+b)

=2(3x+x)

=2(4x)=8x

Acc. to question

8x=168

x=21

Length =3x=3 x 21=63m

Breadth=21m