Hello, I need help on this question. I dont understand it and have been getting the answer incorrect. I am embarrassed to ask my teacher for help so please help

1). 16 π cm^2

2). 112 π cm^3

3). 351.68 cm^3

***If the explanation doesn’t make sense, let me know, and I’ll try to explain in a different way.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

step-by-step explanation:

only stephen hawking would know.