The answer is 225.19 mm since you convert the 11.2 cm to mm which is 112mm and then use the equation pi x r^2 x h
The regular price is 5 for $2.95. One can is $2.95/5 = $0.59. Three cans are $1.77. With the $1 rebate, the final price would be $0.77 for 3 cans, $0.25 per can.