Problems of the Week - November 2 to November 7

Rewards for Problems of the week:

5 points for the correct answer at your level; 10 points for the next level; 20 points each for 2+ levels up.

Lower Elementary:

Question: Tyler has a sticker book that is 8 inches wide and 9 inches tall. He has a set of stickers that are each 2 inches wide and 3 inches tall.  How many stickers will fit on a page of the sticker book?

Upper Elementary:

Question: Alli has a box that is exactly the right size to hold 7 layers of 9 rows of 11 cube-shaped erasers. How many erasers fit inside the box?

Middle School:

Question: Bobby is riding his tricycle around a quarter-mile track. If each wheel is 12 inches in diameter and turns 100 times, then how much further does Bobby need to pedal in order to complete a lap around the track?

Algebra and Up:

Question: The tessellating pattern comprises regular pentagons and rhombuses. Find the measure of x.

Challenge problem to take home. 20 points for the correct answer. 

This star was created by placing equilateral triangles along each edge of a regular nonagon (nine-sided polygon). What is the sum of the measures of the yellow angles?