Step-by-step explanation:
the area of the half-circle:
πr² /2= 3.14* 20² /2= 3.14 * 400 /2 =1256/2=628cm²
50*80/2=2000cm²
Shaded area:
2000-628=1372cm²
Answer: 325 dollars
Step-by-step explanation:
In order to find out a percentage of somethin, you can simply multiply and divide

32500÷100= 325
The answer is 83 1/4 if u are adding them all-
Perimeter = 2w + 2l
Since its a square, the length and width are equal therefore:
2(s + 3) + 2(s + 3) = Perimeter
You can simplify this into a variety of ways:
1. 4(s + 3)
2. 2s + 6 + 2s + 6
3. 4s + 12