ANSWER

EXPLANATION
The area of a sector is calculated using the formula,

The arc measure is given as 45°
The radius of the circle is 8 inches.
We substitute to obtain,


The answer is 11. don't worry, I often forget the basics too XD
Answer:
169 feet²
$1.30
Step-by-step explanation:
Given that :
Amount Shawna has = exact cost of carpet = $219.70
Length per wall = 13 feets
a) How many square feet of carpet will she need?
Number of square feet of carpet :
13 feets * 13 feets = 169 feet²
B.) Cost of each square foot :
Total cost / number of square feet
$219.70 / 169 feet²
= $1.30
I do not know bro. Have you tried