Today in class, we did a mental math, a homework check on question 2.a) of our assignment "Design and Measurement" and went over how to go about solving it, and started on our homework assignment (2. b) from the same booklet.

How to do question 2. a):

1. Cut the ceiling into 4 parts (dotted lines on the diagram) and find the measurements of each side. In this case, the measurements are, for each section, 175 x 222.5

2. Figure out how many tiles can go length-wise and width wise by dividing each side of each section by 30 (length and width of each square tile). 35 tiles per section. 140 tiles for the whole ceiling.

3. The remainder side lengths for length and width are shown in b) by calculating the total amount of needed tiles by multiplying the length by 4 (because the sections are divided).

The remainding length of tiles on the length side is 7 x 4=28. This means that you need 28 tiles that are 12.5cm x 30 cm.

The remainding length of tiles on the width side is 5 x 4=20. This means that you need 20 tiles that are 25cm x 30cm.

4. Calculating the corners is just finding the remaining lengths, which are 25cm x 12.5cm. Then multiply it by 4 (4 corners)

5. Calculate the number of tiles needed.

140+20+14+2= 176 full tiles.

6. Tiles are sold in packages of 25, so you divide 176 by 25 to get the amount of packages needed.

176/25= 7.04. *8 packages are needed*

7. The price without taxes:

8 x 66.95= 535.60

The price with taxes:

535.60 x 1.12= $599.87.