Question

ABCD is a square in which diagonal AC is equal to 12 cm find the area of the square

ans in book is 72 write with statement

Answer 1

area of square=a^2=144 which is not match with the given statement so it is wrong

Answer 2

We know that in a square,

Side = 1/✓2 × diagonal
side = 1/✓2 × 12
Side = 12/✓2 cm


Now,

Area of a square = Side²
= (12/✓2)²
= 144/2
= 72 cm²