Answer:
Step-by-step explanation:
um
Answer:
Correct option: second one
(Volume will be 9 times higher)
Step-by-step explanation:
The volume of a cylindrical can is given by the formula:
V = pi * r^2 * h
Where r is the base radius and h is the height.
If the new radius will be the triple of the old radius and the height will be the same, we have:
r' = 3r
h' = h
So, we can find the new volume V':
V' = pi * r'^2 * h'
V' = pi * (3r)^2 * h
V' = pi * 9r^2 * h = 9 * (pi * r^2 * h) = 9V
So we have that the new volume will be 9 times higher than the old volume.
Correct option: second one.
Answer: 9: c , 10: a ,11 :d 12: a
Step-by-step explanation:
FV = PV ( 1 + i ) ^t
FV = $400, PV = $220, i = 3% = 0.03
400 = 220 * ( 1 + 0.03 ) ^t
( 1 + 0.03 ) ^t = 400 : 220 = 1.818181
t = log ( 1.03 ) 1.81818
t = 20
After 20 years his investment will reach at least $400.