Question

Find the cost of fencing a rectangular park of length 20 m and breadth 15.5 m at the rate of 15
per metre.
A rectangular field is 90 m hy 70 m A man warna mund​

Answer 1

Appropriate question :

Find the cost of fencing a rectangular park of length 20 m and breadth 15.5 m at the rate of 15 per metre.

Given

• Dimensions of a rectangular park :-
• Length of the rectangular park = 20 m
• Breadth of the rectangular park = 15.5 m
• Cost of fencing 1 m² of the rectangular park = Rs. 15

To find

• Cost of fencing the rectangular park

Solution

Using formula,

Area of the rectangular park = l × b

where,

• l = length of the rectangular park
• b = breadth of the rectangular park

Substituting the given values,

⟶ 20 × 15.5

⟶ 310 m²

Area of the rectangular park = 310 m²

• Cost of fencing 1 m² of the rectangular park = Rs. 15

• Cost of fencing 310 m² of the rectangular park = 310 × 15 = Rs. 4650

Therefore, the cost of fencing the park = Rs. 4650

___________________________

Some related formulae :

• Area of square = side × side
• Perimeter of square = 4 × side
• Diagonal of square = √2a
• Perimeter of reactangle = 2(l + b)
• Diagonal of rectangle = √l² + √b²