Question

The figure below shows the ideal pattern of movement of a herd of cattle, with the arrows showing the movement of the handler as he moves the herd. The arc the handler makes from the starting point to the return point should be a quarter of a circle.

Answer 1

Based on this theory, what distance will the handler move from the starting point to the return point if he creates an arc of a circle of radius 85 feet?

21.25

133.45 feet

66.73 feet

88.97 feet

Answer 2

@phi help plz

Answer 3

you need the formula for the length of an arc, if you know the radius and the central angle.

they tell you
a quarter of a circle

do you know what the central angle is to get ¼ of a circle?

Answer 4

the formula is