Question

Find the area of square whose diagonal is 18cm

Answer 1

Answer:

162 cm²

Step-by-step explanation:

given, in square ABCD

diagonal=AC= 18 cm

in triangle ACB, pythogras theorem-

AC²=AB²+BC²

18²= 2AB²                                            (AB=BC are sides of a square)

324/2=AB²

162 cm²=AB²

area= side × side

      = AB×AB

      = 162 cm²

Answer 2

18cm*4

=72square cm

pls mark brainliest