Dear SailorMars, #4's question is very convoluted so I won't show you how to do it. Luckily, I do know how to do #5 and #6. With #5, multiply 8 5/6 by two to get 17 2/3, then do 50-17 2/3 to get 32 1/3 ft of tape. With #6, add 11 1/2 and 6 4/5 to get 18.3 gallons of gas, then do 18.3-3 3/10 to get 15 gallons of gas used.
Answer:
113.1
Step-by-step explanation:
![V=\frac{4}{3} r^3\\V=\frac{4}{3} (3)^3\\113.1=\frac{4}{3} (3)^3\\V= 113.1](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B4%7D%7B3%7D%20r%5E3%5C%5CV%3D%5Cfrac%7B4%7D%7B3%7D%20%283%29%5E3%5C%5C113.1%3D%5Cfrac%7B4%7D%7B3%7D%20%283%29%5E3%5C%5CV%3D%20113.1)
This is the formula you have to follow, finding the volume of objects is hard without the formula and it's just something you'll have to memorize. BUt just remember to plug in the radius which is 3 in this problem, into the volume formula: ![V=\frac{4}{3} r^3](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B4%7D%7B3%7D%20r%5E3)