Answer:
3.285714286
Step-by-step explanation:
the answer to first is 6
#2) x/50=20/45
45x=1000
x=22.2
3)x/42=13/21
21x=546
x=26
(7,4)
225 pi = pi r^2 h
225 = r^2*h
225/1 = r^2
sqrt. (225) = r
r = 15
45 cm