Answer: 
Step-by-step explanation:
You need to use the following formula for calculate the area of a square:

Where "s" is the lenght of any side of the square.
You know that the area of a mural is
. Then, you can substitute this area into the formula and solve for "s", in order to find the side lenght of the mural.
Therefore, this is:

Answer:
y=97
Step-by-step explanation:
180-83=97
The area of a circle is equal to the radius squared times pie, basically:

The radius is 3, so we multiply 3 times 3 times pie to get the area.
You're gonna want to plug in the following into a calculator:

After getting 28.26 from such calculator, you need to round to the tenths place. In this number, the tenths place is the 2 next to the decimal on the right. Because the number after the 2 is a 6, that means we need to simplify the answer to (28.3). When you are rounding a number, you look at the number to the right, if it is 5 or bigger, add one and remove the rest, if it is less than 5, just get rid of the rest and leave it as it is.
99% = 99 / 100 = 0.99
79.9 is 99% of what
= 79.9 / 99
=79.9 / 0.99
<span>= 80.71</span>
Hi mate!
The answer after simplifying is: 2x^2-6x+7
Please let me know if you need further assistance! Have a terrific evening.
~Brooke❤️