9. There are two wires each of length 88 cm. One
is bent to form a square and the other is bent to
form a circle. Find which one of them has more
22.
area. Take t =
2
7
Answers
Answer:
The circle occupies more area than the square.
Explanation:
Given
- Length of each wire is 88 cm
- One is bent to form a square and other to a circle.
To Find
- Which shape occupies more area.
Solution
Perimeter of the square = Length of the wire
Perimeter of the square = 88cm
Perimeter of a square = 4 × side
88cm = 4 × side
88cm/4 = side
22cm = side
Area of a square = side × side
Area of the square = 22cm × 22cm
Area of the square = 484cm²
Area of the square is 484cm²
Perimeter of the circle = Length of the wire
Perimeter of the square = 88cm
Perimeter of a circle = 2πr
⟹ 88cm = 2 × 22/7 × r
⟹ 88cm/2 = 22/7 × r
⟹ 44cm = 22/7 × r
⟹ 44cm × 7/22 = r
⟹ 14cm = r
Radius of the circle is 14cm
Area of a circle = πr²
Area of the circle = π( 14cm )²
Area of the circle = π × 196cm²
Area of the circle = 22/7 × 196cm²
Area of the circle = 616cm²
Area of the circle is 616cm²
616cm² > 484cm²
So, The circle has more area than the square.