Question

☆Mathematics Question☆
Any One.​

Answer 1

We have,

A floor with dimensions 4 m width and 5 m length.

A square carpet of side 3 m.

Area of the floor = length × breath

Area of the floor = 5 × 4 = 20 m2

Area of the square carpet = 3 × 3 = 9 m2

Now, we will be subtracting the square carpet area from the floor's area to get the area of the floor that is not carpeted.

Or

Find the cost of fencing a square park of side 250 m at the rate of ₹ 20 per metre

Solution:

We will be using the formula for the perimeter of a square which is 4 times its side.

Side of the square park = 250 m

The perimeter of the park = 4 × side

⇒ 4 × 250 = 1000 m

1000 m is the perimeter of the square park.

Now, the cost of 1 m fencing is ₹ 20

Hence, the cost of 1000 m fencing = ₹ 20 × 1000 = ₹ 20,000

Therefore, ₹ 20,000 is the cost of fencing a square park of side 250 m at the rate of ₹ 20 per metre.

Hence, the area of the floor that is not carpeted = 20 – 9 = 11 m2

Thus, the area of the floor that is not carpeted is 11 m2

Answer 2

Question:

Find the cost of fencing a square park of side 250m at the rate of Rs.20 per meter.

Answer:

Given:

Cost of fencing - Rs.20 per meter

To find:

Cost of fencing a square park of side 250m

Solution:

$\red {\boxed{Formula \: Used :}}$

$\boxed{Perimeter \: of \: square = \: 4 \times side}$

Side of square park = 250m

So,

Perimeter of square park(square) = 4 × side

Perimeter of square park(square) = 4 × 250

Perimeter of square park(square) = 1000m

Now,the cost of fencing 1m is Rs.20

So, the cost of fencing 1000m = 1000×20

=20000

$\therefore \: { \red { \tt{the \: cost \: of \: fencing \: 1000m =20000}}}$