Question

7.Find the area of the square, the length of whose diagonal is 72 cm.​

Answer 1

Answer:

36

Step-by-step explanation:

let the length of a side of square is a

since the length of a diagonal of a square is a√2

$a \sqrt{2} = 72$

$a \sqrt{2} = 6 \sqrt{2}$

since √2 will be cancelled:

$a = 6$

area of a square = a²

$= {6}^{2}$

$= 36$

area of square is 36cm

if it's correct please mark brainliest