Question

Pat has a circular garden in her backyard. She needs to replace a portion of the fencing shown below by the red

arc. How much fencing material does Pat need to buy? Express your answer in exact form in terms of π and
rounded to the nearest tenth. Be sure to include proper units.

Answer 1

Explanation:

Since we don't see the red arc, i suppose it is the smaller arc BC

of 120° or 2π/3 rad.

Length of the arc BC is

`(2*\pi)/(3) *4 =(8*\pi)/(3)\(ft)\\\approx{8.38\ ft}`