Question

The ration of the length to the breadth of a rectangle is 7:4 . If the perimeter of rectangle is 220m . Find the length of the rectangle

Answer 1

Concept:

If the length of a rectangle is L and breadth is B, then the perimeter (P) of the rectangle is given by,

P = 2(L+B)

Given:

Given that 7:4 is the ratio of the length to the breadth of a rectangle and the perimeter is 220 m.

Find:

We have to find the length of the rectangle.

Solution:

Given that the ratio of the length and breadth is = 7:4

Let the length be = 7x

Then the breadth be = 4x

Then the perimeter is = 2(7x+4x) = 2*11x = 22x

According to condition the perimeter is 220 m.

So, the suitable mathematical equation is given by,

22x = 220

x = 220/22

x = 10

So the value of x = 10

The length of the rectangle is = 7x = 7*10 = 70 m.

Hence the length of the rectangle is given by 70 m.

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Answer 2

Answer:

70 m

Step-by-step explanation:

Given that 7:4 is the ratio of the length to the breadth of a rectangle and the perimeter is 220 m.

If the length and breadth be 7x and 4x respectively.

Perimeter of a rectangle $=2 \times(1+b)$

$\Rightarrow 2 \times(7 x+4 x)=220 \\\Rightarrow 11 x=110 \\\Rightarrow x=10 \mathrm{~cm}$

So the value of x = 10

The length of the rectangle is = 7x = $7\times10$= 70 m.

Hence the length of the rectangle is given by 70 m.

The perimeter of a rectangle is 220m and its length is 50 cm. find the breadth of the rectangle:

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