6:18 students in Debra's class own a cellphone. Because there are 24 people in total. Minus the people who already own cellphones. Leaving 18 without cellphones. The ratio is people who have cellphones to people who do not.
24-6=18. Thus, the ratio would be 6:18
For the lateral area, don't include the base area. For the surface area, you should include it.
Answer: I did a screen shot of the answer
Step-by-step explanation: