question 13

in the diagram, there is 2 small circle in a big circle and what they are asking is what is the area of the shaded rigion when the radius of the larger circle is 6.

what i did was since you know what the radius of the large circle is 6, the area of a circle is "pie r square". so 6x6=36 and x pie is 36pie.

radius of the smaller circles are 3 beacuse 6 is there "d". so 3x3=9pie. and there is 2 circle so times to is 18pie.

use the big circle area to minus the 2 small circles. so 36pie minus 18pie is 18pie. so the answer is 18pie which is "d".

the question i love the most

question number 11:

there are twelve balloons, i <3 balloons!!!!!

but anyways, there are twelve balloon and they are asking is if i pop every other 3 balloon, how many balloon will be left.
i dont really have a picture of the circle of balloon but when u look at it is really cool. plus when u figure it out everything starts to make sense. so u pop every 3rd balloon and there are letter A to J

teh question is asking u what letter of balloon will be the last three standing. this is the funnest question there is because u dont really have to do math. all you have to do is count.

tower of hanoi

describe the straggy and formula for the puzzzle tower of hanoi

From the moves necessary to transfer one, two, and three disks, we can find a recursive pattern - a pattern that uses information from one step to find the next step - for moving n disks from post A to post C:
First, transfer n-1 disks from post A to post B. The number of moves will be the same as those needed to transfer n-1 disks from post A to post C. Call this number M moves. [As you can see above, with three disks it takes 3 moves to transfer two disks (n-1) from post A to post C.]
Next, transfer disk 1 to post C [1 move].
Finally, transfer the remaining n-1 disks from post B to post C. [Again, the number of moves will be the same as those needed to transfer n-1 disks from post A to post C, or M moves.]