Question

the diagonal of a square is 20 m. Find its area.​

Answer 1

Step-by-step explanation:

all sides are equal

so by using Pythagoras

AB will be equal to √10

and the area will be 10 cm²

Answer 2

Step-by-step explanation:

side of square =1/√2 of diagonal

Side of square is 10√2

area of square = 4×side

= 4 × 10√2

= 40√2