Answer:
D.441
Step-by-step explanation:
All sides of a square are equal. Due to this, the perimeter can be expressed as 4 times the side of the square. Let x be the side of a square.
Then we have:
4x = 84
x = 21
The area of a square is written as x^2, as x is both the length and the width.
So your answer will be:
(21)^2 = 441
The area of the garden is 441 sq ft
A square is a quadrilateral with four equal sides.
Characteristics of a square includes:
• The diagonals bisect each other at 90°.
• Opposite sides parallel and of equal length
• The four angles of a square are equal.
Perimeter of a square =4 x length
84 = 4 x length
divide both sides of the equation by 4
84/4 = length
length = 21 feet
Area of a square = length²
21² = 441 sq ft
For more information on how to determine the area of a square, check : https://brainly.com/question/13227863?referrer=searchResults
