Question 21 options:
Find the perimeter. Use straight pi = 3.14.
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This is an illustration of a semi circle labeled with a diameter of eight and two tenth meters.
The perimeter of a semicircle can be found by adding the length of the curved edge (the circumference) to the length of the straight edge (the diameter).
Given that the diameter of the semicircle is 8.2 meters, we can find the circumference using the formula:
Circumference = π * diameter
Circumference = 3.14 * 8.2 = 25.708 meters (rounded to three decimal places)
To find the perimeter, we add the circumference to the diameter:
Perimeter = Circumference + Diameter
Perimeter = 25.708 + 8.2 = 33.908 meters (rounded to three decimal places)
Therefore, the perimeter of the semicircle is approximately 33.908 meters.