19.ans> Given,
Side = 9 m
To,find: Area
We,know that,area of the square is = (side)²
We,know that,area of the square is = (side)² = 9×9
We,know that,area of the square is = (side)² = 9×9 = 81 m
20.ans> Given,
Side= 7 cm
We,know that,area of the square is = (side)²
We,know that,area of the square is = (side)² = 7 × 7
= 49 cm