Question

The length of a rectangular park is three times its breadth. If the perimeter of the park is 480 metres, find its dimensions.​

Answer 1

Answer:

Length =180m and breadth=60m

Step-by-step explanation:

let the breadth be x

length is 3times breadth =3x

given perimeter =480m

2(l+b)=480

2(3x+x)=480

8x=480

x=60m

length =3x=3(60)=180m

breadth=x=60m

Answer 2

Answer:

Dimensions of rectangular park are : length = $180\ m$ , breadth = $60\ m$ .

Step-by-step explanation:

To find : dimensions of rectangular park .

Given : the length of a rectangular park is three times its breadth. The perimeter of the park is 480 meters .

Solution :

• As per given data we know that the length of a rectangular park is three times its breadth. The perimeter of the park is 480 meters . We have to find dimension of park .
• Let , $x$ be the breadth of rectangular park and $3x$ be the length of rectangular park .
• To find dimensions  we use following formula -

       Perimeter of rectangle $= 2 ( l + b )$

• Substituting the values we get,

        $480 = 2 ( 3x +x )\\240 = 4x \\x = \frac{240 }{4}\\ x= 60$

• Now ,  breadth of rectangular park = $x = 60\ m$

                   length of rectangular park = $3x = 3\times 60 = 180\ m$