Question

4. The area of a rectangle of breadth 18 cm is 360 cm. Find its perimeter.
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Answer 1

Answer:

76

Step-by-step explanation:

18 × x = 360

x = 360 /18 =20

18+18+20+20=76 perimeter

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Answer 2

Correct Question : -

The area of a rectangle of breadth 18 cm is 360 cm. Find its perimeter.

Given : -

Breadth of Rectangle = 18cm

To Find : -

Perimeter of Rectangle = ?

Formula : -

$\sf\boxed{Area\:of\:Rectangle=length\times{breadth}}$

Solution : -

360 = l × 18

360/17 = l

20 = l

So , the length of the rectangle is 20cm ..

Now :

Formula : -

$\sf\boxed{Perimeter\:of\:Rectangle=2\times{(l+b)}}$

Solution : -

2 × (l + b)

2 × (20 + 18)

2 × 38

76

Therefore , the perimeter of rectangle is 76cm² ..