Answer:
Step-by-step explanation:
Example 1: Find the area and perimeter of the square whose side length is 4 meters.
Solution:
Given that:
a = 4m
Area of square = a2 = 4 × 4 = 16 m2
Perimeter of the square = 4 × 4 = 16 m
Example 2: Find the perimeter of square whose sides are 16 cm in length.
Solution:
Perimeter of the square:
P = 4a
P = 4 × 16 cm
P = 64 cm
Hence, the perimeter of square is 64 cm.
Example 3: What is the perimeter of a square, if the length of each side is 13 ft?
Solution:
The length of each side of a square is 13ft.
The perimeter of a square:
P = 4 × a
P = 4 × 13
P = 52 ft
The perimeter of the square is 52 ft.
Example 4: The perimeter of a square is 24 cm. What would the length of its sides be, if its perimeter is increased by 4 cm?
Solution:
New perimeter of the square = 24 + 4 = 28 cm.
New perimeter of the square = 4 × the new length of a side of the square
Let the new length of a side of the square = l cm
a = 7 cm
Example 5: The area of a square park is 225 m2. Find its perimeter.
Solution:
Given:
Since the area is 225 m2, the length of the sides can easily be determined:
A = s²
225 = s²
s = 15m
Thus, the perimeter of park is:
P = 4 × s.
P = 4 x 15 m.
P = 60 m.
