Answer:
hrs =4
Step-by-step explanation:
550-11
200-x
cross multiply
550x=200×11
550÷550=2200÷560
x=4
Pythagorean theorem
Step-by-step explanation
a^2+b^2=c^2
v=πr^2h
v/πr^2=h
7
42/6 = 7
