Noah built a fenced dog run that is 8 yards long and 4 yards wide. He placed posts at every corner and every yard along the length and width of the run.
How many posts did he use?
Noah used
posts.

4

step-by-step explanation:

the answer is c

step-by-step explanation:

ans789

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet