Answer:
( About ) 90%
Step-by-step explanation:
We are given the table below;
Number of seconds | Amount of water
0 | 0
3 | 75
6 | 150
Now from this table we see that the rate change is that for every 3 seconds of difference, the amount of water increases by 75 cm^3;
If that is so, the amount of water after 7 seconds is 150 + ( 75 / 3 ), provided the difference in seconds between 6 and 7 is 1 / 3rd that of the difference between 0 and 3, or 3 and 6;
150 + ( 75 / 3 ),
150 + 25,
175 cm^3
Now let us compute the total volume of this cylinder, as such;
πr^2 * height,
π * ( 3 )^2 * 7,
9 * π * 7,
Volume of can ⇒ 197.82 cm^3
175 / 197.82 = 0.9 = Solution; 90%
