Question

The length and breadth of a rectangular field are 18m and 15 m respectively. find the: perimeter of field and cost of the field at Rs. 12 per metre​

Answer 1

$\bold\red{☆ \: \: Question :}$

• The length and breadth of a rectangular field are 18m and 15m respectively. Find the perimeter of the field and cost of the field at Rs. 12 per m.

$\bold\red{ ☆ \: \: Answer :}$

• Perimeter of field = 66 m
• Cost of field = Rs. 3240

$\bold\red{☆ \: \: Explanation :}$

Given :

• Length of field = 18 m

• Breadth of field = 15 m

To Find :

• Perimeter of field?

• Cost of field?

Solution :

We know that,

Perimeter of Rectangle = 2 × (L + B)

⟹ Perimeter = 2 × (18 + 15)

⟹ Perimeter = 2 × 33

⟹ Perimeter = 66

⟹ Perimeter of rectangle is 66 m.

Now ,

For finding the cost of field,

We have to find area of field.

Area of Rectangle = L × B

⟹ Area = 18 × 15

⟹ Area = 270

⟹ Area of rectangle = 270 m²

According to the question,

Cost of field for 1 m² = Rs. 12

Therefore,

Cost of field for 270 m² = 270 × 12

Cost of field for 270 m² = Rs. 3240