Answer:2 ft
Step-by-step explanation:
Area of circle = pi x r^2 = 4 pi
So r^2 = 4
r =2
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:
1.6
Step-by-step explanation:
1.2, 1.8, 1.6, 1.4, 1.4, 2.2's mean rounded to the nearest tenth is 1.6
Answer: They are 41 miles apart after 3 hours.
Step-by-step explanation:
The speed at which Aran runs is
7 mph.
Distance = speed × time
If Aran runs for 3 hours, then the distance that he would cover is
7 × 3 = 21 miles
The speed at which Anil runs is
5 mph. They decide it would be fair if Anil got a 1 hour head start. This means that the total time that Anil spent running is 3 + 1 = 4 hours.
Distance covered by Anil in 4 hours is
5 × 4 = 20 miles
Therefore, the total distance covered after 3 hours is
21 + 20 = 41 miles