Question

A recipe will make 10 pancakes that are 8 inches in diameter. If you decide to
make 4 inch diameter pancakes, how many of the smaller pancakes would this
recipe make?

Answer 1

10 * 2 = ?

Answer 2

20

Answer 3

There's your answer! :D

Answer 4

i asked the teacher he said no

Answer 5

apparently i think its something with pi

Answer 6

Then I'm not sure... Sorry. I would think that that would be the answer...

Answer 7

https://virtualmathclub.files.wordpress.com/2013/04/problem-set-76.pdf

Answer 8

can u help me at least in one of them

Answer 9

Sorry... I'm not good at this kind of thing... Good luck though.

Answer 10

Thank you

Answer 11

and its okay

Answer 12

The answer is not 20.
What matters is how much smaller is the area of a 4-inch pancake than an 8-inch pancake.
A 4-inch pancake does not have half the area of an 8-inch pancake.

Answer 13

okay

Answer 14

Here are the steps to get the correct answer.
1. Use the formula for the area of a circle and find the area of an 8-inch diameter pancake.
2. Then multiply that area by 10. That gives you the total area of 10 8-inch diameter pancakes.
3. Now use the formula for the area of a circle again, and find the area of a 4-inch diameter pancake.
4. Divide the total area of 10-inch diameter pancakes from step 2 by the area of one 4-inch diameter pancake from step 3. That is the number of 4-inch diameter pancakes that can be made.

Answer 15

Thank you!

Answer 16

Here is a figure to show what I wrote above.
The large circle represents a pancake with a diameter of 8 inches.
Each small circle inside has a diameter half the size of the larger circle. That means that each small circle represents a 4-inch diameter pancake.
Do you see how the total area of the two small circles fit inside the large circle with a lot of area to spare? That shows that the area of one 4-inch diameter pancake is much less than half the area of one 8-inch diameter pancake.

Answer 17

You're welcome.

Answer 18

Thank you a lot!

Answer 19

You're welcome.