A gardener is installing a circular garden. The radius of the circle 28 feet. He needs to know the circumference in order to buy materials for the edging. What is the circumference if he uses = 22/7.
The circumference is ?
A contractor is pouring a concrete driveway. The perimeter is 108 ft. What length will the driveway be if the width is 12 ft.?
How many feet is the Drive Way?
C = 2 pi r = (44/7) 28 = 176
2L + 2b = 108
L + b = 54
L = 54 - 12 = 42
A circle has a diameter of 10 centimeters.
What is the best approximation of its area?
Use 3.14 to approximate for π .
15.7 cm²
31.4 cm²
78.5 cm²
314 cm²
To find the circumference of a circle, you need to use the formula:
Circumference = 2 * π * radius
Since the radius of the circle is given as 28 feet, you can substitute this value into the formula:
Circumference = 2 * (22/7) * 28
Now, you can simplify and calculate the circumference:
Circumference = 2 * (22/7) * 28
Circumference = (44/7) * 28
Circumference = 1232/7
Circumference ≈ 176 feet
Therefore, if the gardener uses the approximation of π as 22/7, the circumference of the circular garden is approximately 176 feet.