How was ethos used effectively in the advertisement?.

Ethos is credibility and reliability.

Explanation:

In an advertisement, the author could use ethos, pathos, and logos.

Ethos- What makes the source reliable? Is the author knowledgeable? Do they use facts? In an advertisement, the author often will use/mention a person who is connected to the topic to try to get you to do what they want.

Pathos- Pathos plays on your emotions and feeling to try and convince you to do what the author wants.

Logos- logos is logic and reason, the author will add facts to make their advertisement more convincing.

perimeter = 2l +2w, divide total perimeter by 2 for total length of 1 side and 1 width

172/2 = 86 (  total for 1 side and 1 width)

86-24 = 62 (since length is 24 ft longer subtract 24 then divide by 2 for width)

62/2 = 31

width = 31 feet

length = 31 +24 = 55 feet

check: 31*2 = 62, 55*2 = 110,  110+62 = 172