How can I find the arc length and what’s the answer

The arc length of the partial circle is

Step-by-step explanation:

we know that

The circumference of a complete circle is given by

where

r is the radius of the circle

In this problem

we need to calculate the arc length of three fourth of the circle

so

we have

substitute

therefore

The arc length of the partial circle is

b.-4 units

all you   do is count how many times you move

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40