How to Guess How Many Candies Are in a Jar
243.1 هزار بار بازدید -
15 سال پیش
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Want to win the prize? Knowing a little math is the key to winning this popular contest.
Step 1: Estimate jar capacity
Ask for or estimate the total volume of the jar as best you can. Convert the volume to milliliters.
Tip
Convert to liters quickly by typing "convert (your original units) into liters" into a search engine.
Step 2: Determine whether the candies are spheres
Determine whether the candies are spheres. If they are balls, like gumballs or jawbreakers, they're spheres. If the candies are round, but longer than they are wide, they are "oblate spheroids."
Step 3: Find the volume of one candy
Find the volume of one candy, also in milliliters. First, find the radius of one candy, either my estimating, using a tape measure, or by using vernier calipers, which will provide the most precise measurement. If your candy is spherical, use the formula V = 4/3πr3, where r is the radius of one candy, in centimeters. Round pi to 3.142 if you don't have a scientific calculator.
Tip
If the candies are oblate spheroids, use the formula V = 4/3πa2b, where a is the longer radius, and b is the shorter radius.
Step 4: Determine percentage of volume used
Calculate the percentage of the total volume the candies take up in the jar. Calculate 64 percent of the jar's total volume if the candies are spheres, and calculate 66.5 percent of its volume if they are oblate spheroids.
Step 5: Figure it out
For spherical candies, divide your estimate for the size of one candy into 64 percent of the volume of the jar. For oblate spheroid candies, divide the average size of one candy into 66.5 percent of the volume. You've got the answer; now amaze your friends with your guess!
Did You Know?
Did you know? Bubble gum was invented by Walter Diemer in 1928.
-
-
Like these Kid's Activities !!! Check out the official app http://apple.co/1ThDIrx
Watch more Games for Kids videos: http://www.howcast.com/videos/282260-...
Want to win the prize? Knowing a little math is the key to winning this popular contest.
Step 1: Estimate jar capacity
Ask for or estimate the total volume of the jar as best you can. Convert the volume to milliliters.
Tip
Convert to liters quickly by typing "convert (your original units) into liters" into a search engine.
Step 2: Determine whether the candies are spheres
Determine whether the candies are spheres. If they are balls, like gumballs or jawbreakers, they're spheres. If the candies are round, but longer than they are wide, they are "oblate spheroids."
Step 3: Find the volume of one candy
Find the volume of one candy, also in milliliters. First, find the radius of one candy, either my estimating, using a tape measure, or by using vernier calipers, which will provide the most precise measurement. If your candy is spherical, use the formula V = 4/3πr3, where r is the radius of one candy, in centimeters. Round pi to 3.142 if you don't have a scientific calculator.
Tip
If the candies are oblate spheroids, use the formula V = 4/3πa2b, where a is the longer radius, and b is the shorter radius.
Step 4: Determine percentage of volume used
Calculate the percentage of the total volume the candies take up in the jar. Calculate 64 percent of the jar's total volume if the candies are spheres, and calculate 66.5 percent of its volume if they are oblate spheroids.
Step 5: Figure it out
For spherical candies, divide your estimate for the size of one candy into 64 percent of the volume of the jar. For oblate spheroid candies, divide the average size of one candy into 66.5 percent of the volume. You've got the answer; now amaze your friends with your guess!
Did You Know?
Did you know? Bubble gum was invented by Walter Diemer in 1928.
15 سال پیش
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است.
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