Question

the area of a rectangular field is 768m² and it's length is 32 m. Find the cost of fencing it at ₹20 per meter​

Answer 1

Answer :-

Given :-

• Area of rectangular field = 768 m²
• Length = 32 m
• Cost per meter = ₹20

To Find :-

• Cost of fencing field

Solution :-

We know that,

Area = Length × Breadth

Substituting the values in formula :-

→ 768 = 32 × B

→ B = 768 / 32

→ B = 24

Now, we have length and breadth of rectangle. Calculating the perimeter of rectangular field :-

→ Perimeter = 2 ( Length + Breadth )

→ P = 2 ( 32 + 24 )

→ P = 2 ( 56 )

→ P = 112

Perimeter of rectangle = 112 m

→ Cost of fencing = 112 × 20 = 2240

Cost of fencing = ₹2240

Answer 2

A N S W E R :

• The cost of fencing at ₹2240.

Given :

• Area of rectangular field 768m²

• Length 32m

• Cost per meter ₹20

To find :

• Find cost of fencing field ?

Solution :

As we know that,

Formula Used :

★ Area of rectangle = Length × Breadth

• Substituting the values,

=> B = area/length

=> B = 768/32

=> B = 24

★ Perimeter of the field = 2(length + Breadth)

=> P = 2(32 + 24)

=> P = 2 × 56

=> P = 112

• Perimeter of rectangle 112m

The cost of fencing the field = 112 × 20

Hence,

• The cost of fencing at ₹2240.