Question

The length of a rectangle field is 18 m .if it's perimeter is 54 then it's area is?​

Answer 1

Answer:

• 162m² is the required area of rectangle .

Step-by-step explanation:

Given:-

Length of a rectangle field is 18 m

Perimeter is 54

To Find :-

Area of rectangle ,A

Solution:-

According to the Question

As we have provided the length and perimeter of rectangle .So, firstly we will calculate the breadth of rectangle.

Let the breadth be b m

Now , we know that ,

Perimeter of Rectangle = 2(length+breadth)

by putting the value we get

↠ 54 = 2(18+b)

↠ 54/2 = 18+b

↠ 27 = 18+b

↠27-18 = b

↠ b = 9m

Now, calculating its area

• Area of Rectangle = Length × Breadth

Substitute the value we get

↠ Area of Rectangle = 18×9

↠ Area of Rectangle = 162 m²

• Hence , the area of the rectangle is 162 m²

Answer 2

$\huge \mathfrak \pink{answer}$

$length \: = \: 18cm$

$perimeter \: of \: rectangle \: = \: 54cm$

$perimeter \: of \: rectangle \: = \: 2(l + b)$

$= > \: 2(18 + b) \: = 54$

$36 + 2b \: = \: 54$

$2b \: = \: 54 - 36 \: = \: 18$

$b \: = 18 \div 2 = 9$

Area of Rectangle = l×b

=> 18 × 9

=> 162m