Answer:
Option 1: 43π feet
Step-by-step explanation:
We are given that:
encloses garden with circular fence
garden measures 43 feet across = diameter
To find how much fencing is needed, we have to find the cicumference of the circular fence using the formula:
C = 2πr
C = Circumference
r = radius = half the diameter
We are given the diameter, so we just do half of it to get the radius
43 ÷ 2 = 21.5
r = 21.5
Now we substitute this into the formual:
C = 2πr
Substitute radius into formula
C = 2π(21.5)
Multiply 2 and 21.5
C = 43π
