Question

the diagonal of a square is 7 root 2 cm find its area​

Answer 1

Answer:

49 sq.cm.

Step-by-step explanation:

We are given that the diagonal of a square is$7 \sqrt{2} cm$

Formula of diagonal of square = $\sqrt{2} a$

Where a is the side of the square .

So, $7 \sqrt{2} =\sqrt{2} a$

$7 =a$

Thus the side of the square is 7 cm

Area of square = $Side^2$

                          = $7^2$

                          = $49 cm^2$

Hence the area of the square is 49 sq.cm.

Answer 2

Answer:

49

Step-by-step explanation:

a√2=7√2

a=7

AREA= 7×7=49