Question

Find the perimeter of a square whose area is 784 cm​

Answer 1

3,136

Step-by-step explanation:

4× 784= 3,136

it's formula is 4×sides

Answer 2

Given: Area of a square = 784 cm²

To find: Perimeter of the square

Solution: We know, all four sides of a square are equal.

The formula for area of a square = (side)²

Hence accordingly,

784 = (side)²

⇒ side = √784

⇒ side = 28

Therefore, the side of the square = 28 cm.

We know, perimeter of a square = 4 × side.

So perimeter of the given square = 4 × 28 cm

                                                        = 112 cm

Answer: 112 cm