A cupcake company designed cylindrical boxes for their new cake pops. How much material is needed to make three boxes if each is
1 answer:
Answer:
26.52 cubic inches
Step-by-step explanation:
We need to find the volume of each box and then multiply by 3.
The volume of a cylinder is given as:
where r = radius
h = height
The height of each box is 5 inches and its radius is 0.75 inches.
Therefore, the volume of each box is:
V = 8.84 cubic inches
The volume of 3 boxes will therefore be:
V = 8.84 * 3 = 26.52 cubic inches
26.52 cubic inches of material is needed to make 3 boxes.
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Complete question:
Anty was riding his bike to school at a speed of 12 mph. When he was <u>half </u>of the way there, he got a flat tire. His mother drove him the rest of the way at a speed of 48 mph. What was his average speed?
Answer:
His average speed is 19.2 mph
Step-by-step explanation:
Given;
speed of Anty to school half of the way, v₁ = 12 mph
speed of Anty when his mother drove him half of the way, v₂ = 48 mph
The average speed of Anty is calculated as;
The value of the average speed is closer to 12 mph than 48 mph because Anty spent more time moving at 12 mph than at 48 mph.
Let the equal distance travel at each speed = 96 miles
Time taken at 12 mph =
Time taken at 12 mph =
Average speed =
Also, you can assume any other equal distance traveled at each speed, the average speed will still be 19.2 mph.
<u>Check:</u> let the equal distance traveled at each speed = 480 miles
Time taken at 12 mph = 480/12 = 40 hours
Time taken at 48 mph = 480/ 48 = 10 hours
Average speed = (480 + 480) / (40 + 10)
= 19.2 mph