Find the side and perimeter of a square, if area is 81 square cm
Answers
Answered by
2
Answer:
Side = 9cm
Perimeter = 36 cm
Step-by-step explanation:
Area of Square = side × side
Given, Area = 81 cm²
81 = ( side )²
side = √ 81 = 9cm
∴ Side of square = 9 cm
Perimeter of square = 4 × side
Perimeter = 4 × 9
∴ Perimeter = 36 cm
Answered by
1
Answer:
Step-by-step explanation: The area of a square =
l 2
where l is the length of the square's side.
l 2 = 81
⇒ l = √ 81 = 9
hence Perimeter =
4 × 9 = 36 c m
Similar questions