A=pi*r^2=pi*12^2=452.39 cm^2
I'm not sure what you want with the first part (3/1=6/2)
well PEMDAS or parenthasees exponents, mult or division whichever comes first, addition subtraction, whichever comes first so
3-1/1 would be divison first
1/1=1
3-1=2
When you change the quick picture, the problem always changes and so does the sum of the problem, but if you like change the same numbers around you gonna get the same outcome.
48 1/2 - (10 1/4 + 24 1/8) =
48 1/2 - (10 2/8 + 24 1/8) =
48 1/2 - 34 3/8 =
48 4/8 - 34 3/8 =
14 1/8 <=== so he is left with 14 1/8 inches of crown molding
You should first turn 1 5/8 into an improper fraction. 1 5/8= 13/8. For fractions, you just multiply regularly.
Let’s do the numerators first (the top number):
2 • 13 = 26
Now the denominators:
3•8= 24
The fraction would be 26/24, but this can be simplified smaller. Let’s divide the top and bottom by two (trick when simplifying is to divide by smaller numbers if you can like 2,3,4).
We now have 13/12, and since 13 is prime, that is the farthest we can simplify to. Let’s make it a mixed number, 1 1/12 is the answer.
