Answer:
Step-by-step explanation:
i think that it is C but not 100% sorry
R = 14
s = 11
2(14)+2(11)=50
28+22=50
2(14) - 11 =17
28 - 11 =17
I believe it is the second answer
Volume=904.78
Surface Area=452.39
Answer:
36%
Step-by-step explanation:
20 % solution in 4/5 parts of the mmixture gives 80/5
100% solution in 1/5 parts of the mixture gives 100/5
total would give 80+100/5= 36% solution
