23 = h -52
23+52 = h -52 +52
75 = h
On the unit circle, the abscise (x) is the cosine and the ordinate (y) = sinus
So y is the sinus
$25.21 times 40 equals $1008.40 This is how much he makes a week.
1008.4 times 52 equals $52436.80
He makes $52436.80 a year.
The inside diameter would be the outside diameter minus 2 of the wall thicknesses.
4 9/32 - (2 x 7/32)
Simplify:
4 9/32 - 14/32
Because 14/32 is larger than 9/32 change one of the hole numbers to a fraction: 1 = 32/32
rewrite 4 9/32 as 3 41/32
Now subtract:
3 41/32 - 14/32 = 3 27/32 inside diameter.
