A) if the perimeter of a square is 80 m
find its side and its area.

The side of the square is 20 meters and area is 400 sq, meters

Step-by-step explanation:

The perimeter of a square with side length a is given by, P = 4a.

Now, given that 4a = 80

⇒ a = 20 meters.

Therefore, the area of the square is, A = a² = 20² = 400 square meters.  

Hence, the side of the square is 20 meters and the area is 400 sq, meters. ( Answer )

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)

step-by-step explanation: