Farmer john's son built a track to walk his pet pig. The track goes around the rectangular pig pen. The pig pen is 15 ft long and 21 ft wide, if the pig walks all the way around the track, how many feet did he walk? A.36 B.72 C.144 D.315

(b)

Step-by-step explanation:

Given

dimension of Pig pen is

width

Pig walks around the perimeter

and perimeter of the rectangular area is  

Pig walks

d

step-by-step explanation:

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42