Question

1. Find the cost of fencing a rectangular park of length 300 m and breadth 200 m at the rate of
* 20 per metre.

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Answer 1

Step-by-step explanation:

Perimeter of park=300x200=60000m

Cost of fencing =60000x20=120000rs

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Answer 2

Required Answer :

$\large\sf{{{{Given}}}}$

• Length of the Rectangular Park = 300 m

• Breadth of the Rectangular Park = 200 m

• Cost of fencing per m = ₹ 20

$\large\sf{{{{To \: \: Find}}}}$

• The cost of fencing the Rectangular Park

$\large\sf{{{{Formula \: \: Used}}}}$

• Perimeter of Rectangle = 2 × ( Length + Breadth )

$\large\sf{{{{Solution}}}}$

To find the cost of fencing the Rectangular Park we need to first find out the Perimeter of the Park with the help of the Formula Perimeter of Rectangle = 2 × ( Length + Breadth ), and then multiply the Perimeter with 20, so let's do it!

Perimeter of Rectangle = 2 × ( Length + Breadth )

Perimeter of Rectangle = 2 × ( 300 + 200 )

Perimeter of Rectangle = 2 × 500

Perimeter of Rectangle = 1000 m

So, now we have the Perimeter of the park, let's find out the cost of fencing it then!

1000 × 20 = ₹ 20000

∴ The cost of fencing the Rectangular Park at the rate of ₹ 20 per m is ₹ 20000

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Important Formulas :

Perimeter of Square = 4 × side

Perimeter of Rectangle = 2 × ( Length + Breadth )

Perimeter of Triangle = Sum of all sides

Area of Square = side × side

Area of Rectangle = Length × Breadth

Volume of Cube = side × side × side

Volume of Cuboid = Length × Breadth × Height

Note : We can also write the formula Area of Square = side × side as Area of Square = ( side )² and Volume of Cube = side × side × side as Volume of Cube = ( side )³

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