The height and the diameter should be proportional, so the bigger cylinder has a ration of 3 ft to 12 ft, which means its a 1:4 ration. Thus d is 8 in * 4 = 32 inches
Step 1) Find common denominator. In this case it was 28.
Step 2) Multiply 1/4 by seven to get 7/28 and then 2/7 by 4 to get 14/28.
Step 3) Add numerators: 7+14 to get 21
Step 4) Simpify your new added Fraction 21/28= 3/4
Your answer is 3/4
Please let me know if you would like further explanation (:
Answer:
Hey there!
We have that 4/5, or 80% of the 60 students passed the exam.
Thus, we have:
0.8(60)=48
48 students passed the exam.
Let me know if this helps :)