Question

Area of a square plot is 100m². The cost of fencing around the plot at rupees 15 per metre is:​

Answer 1

Answer:

600 rupees

Step-by-step explanation:

as area is 100 m^2.

all sides of square are equal.

suppose a is side of square .

so area= a*a

=100 = a*a

a^2=100m^2

a=√100

a=10 m

side of square= 10 m

perimeter of square = fencing

perimeter=4*a

perimeter=(4*10)m

perimeter=40m

cost of fencing= perimeter*cost of per meter

cost of fencing = (40*15) rupees

cost of fencing = 600 rupees

Answer 2

Given :-

• Area of a square plot is 100m².The fencing around the plot at rupees 15 per metre

To find :-

• Total cost of fencing

Solution :-

• Area of square plot = 100m²

As we know that

→ Area of square = side × side

Let the side of square plot be " a "

→ 100 = a²

→ a = √100

→ a = 10m

Hence, side of square plot is 10m

Now,

→ Perimeter of square plot

→ 4 × side

→ 4 × 10

→ 40m

It is given that the fencing around the plot at rupees 15 per metre.

→ Total cost of fencing

→ 15 × 40

→ Rs.600

Hence,

• Total cost of fencing around the plot is Rs.600