Answer:
Step-by-step explanation:
C = 19π
π = C/19
Total Cost = $1.47
Length of the wooden board =
Cost of the wooden board = $0.25 per foot
Total Cost = Cost per foot X Total Length in foot
=
I DON'T KNOW PLEASE PLEASE TELL
x=15
21:2x=7:10 can be rewritten as 21/2x=7/10
21/2x=7/10, cross multiply
= 14x=210