Question

19. The perimeter of a square is 40 cm. Find its area.​

Answer 1

Answer:

Step-by-step explanation:

Perimeter of a square = 40 cm

P = S × 4

So side of a square = P/S = 40 / 4 = 10cm

So area of a square = S × S = 10 × 10 = 100cm2

Answer 2

Given :-

• Perimeter of the square is 40 cm

To find :-

• We have to find the area of the given square

Solution :-

Let the side of the square be xcm

Now,

The perimeter of the square = 40cm

As we know that,

Perimeter of square = 4 * side

Subsitute the required values,

40 = 4 * x

x = 40/4

x = 10cm

Thus, The side of the square is 10cm

Now,

We have to find the area of square

Therefore,

Area of square = Side * Side

Subsitute the required values,

Area of square = 10 * 10

Area of square = 100cm^2

Hence, The area of the square is 100cm^2 $.$