Let the original volume be pi *r^2* h where r = radius and h = height.
The new volume will be pi *(2/5 r)^2 * 4h = pi*4/25 r^2 4h
pi*4/25r^2 * 4h / pi r^2 h = 4/25 * 4 = 16/25
The volume has been reduced by factor of 16/25.
Answer:
Step-by-step explanation:
Red = 4
Blue = 6
Yellow = 2
Total = 4 + 6 + 2 = 12
Probability is that event divided by total event, so
Probability of Blue = 6/12 = 1/2
Since, we put the blue again back into the bag, so we still have same amount of each (this is with replacement, probability).
So, 2nd time:
Probability of Blue = 1/2 (same)
Now, we need to multiply these to get probability of blue IN A ROW:
1/2 * 1/2 = 1/4
In order to get an 81 average,
the student has to get 81x5=405
71+96+90+73+?=405
330+?=405
405-330=75
he needs to get an 75
2 to the -4th power is .0625 and 2 to the 2nd power is 4 so .0625 times 4 = 0.25 or 1/4
Answer:
109 2/3
Step-by-step explanation:
10 / 7(47) x 20 / 6 =
10 / 329 x 20 / 6 =
32.9 x 20 / 6 =
658 / 6 =
109 2/3
Hope that helps!