Answer:
15) surface area = 791.68, volume = 1693.32
16) surface area = 138.23, volume = 113.1
17) surface area = 650.87, volume = 1073
18) surface area = 34.87, volume = 10.52
19) surface area = 153.94, volume = 179.59
20) surface area = 314.16, volume = 523.6
Explanation:
sorry I didn't add the cm or inches or km in my answers :)