10/8 G Warm-up

Poll

Please be sure to have out your textbook (workbook), calculator, and scratch paper (or whiteboard).

If you could pick a cake to have for your birthday, what kind of cake would you choose?

• Funfetti

• Vanilla

• Chocolate

• Red Velvet or Strawberry

• Ice Cream Cake (not a big cake fan)

Multiple Choice

Speaking of cake...

Checkpoint 5 Question 2:

How many layers is this cake?

• 1

• 2

• 3

Multiple Choice

Checkpoint 5 Question 2:

What shape is EACH layer of the cake?

• Spheres

• Circles

• Cylinders

• Prisms

Multiple Choice

Checkpoint 5 Question 2:

If the goal is to find the cubic inches of batter for the cakes, you will be finding the __________ of the top and bottom layers (cylinders).

• Surface Area

• Volume

• Area

Multiple Choice

Checkpoint 5 Question 2:

Let's find the amount of batter (volume) needed to create the TOP layer of the cake. Round to the nearest tenth.

$$V=B\cdot h$$

with B = area of the base (circle), h = height

OR

$$V=\pi r^2h$$

with r = radius, h = height

• $$100.5\ in^3$$

• $$100.6\ in^3$$

• $$50.3\ in^3$$

• $$50.2\ in^3$$

Open Ended

Checkpoint 5 Question 2:

Once you have found the volume of the TOP layer of the cake, what would you need to do NEXT to find the TOTAL VOLUME of the cake?

Draw

QUICK DRAW!

How are you feeling today?

Multiple Choice

2-5 HW: #7 (p. 113)

When you're finding the surface area of a triangular prism, what are you finding?

• The "outside" area (gift wrap)

• The "outside" perimeter (edges of prism)

• The "inside" of the prism (what is inside the "gift")

Multiple Choice

2-5 HW: #7 (p. 113)

How many triangles are there?

• 1

• 2

• 3

Multiple Choice

2-5 HW: #7 (p. 113)

How many rectangles are there?

• 1

• 2

• 3

Multiple Choice

2-5 HW: #7 (p. 113)

If you're trying to find the surface area, you're trying to add the area of all the pieces together.

That means, the area of 2 triangles + the area of the 3 rectangles = TOTAL surface area.

What formula do we use to find the area of a rectangle?

• $$A\ =\ bh$$

• $$A=\frac{1}{2}bh$$

Multiple Choice

2-7 HW: #7 Grass Seed (p. 134)

(a) What is the LEAST value for the length (top number) of the lawn?

Hint: if everything is being rounded to the nearest WHOLE number, what is the smallest possible number (to the nearest tenth) 17 yd could be?

• 16.0

• 16.4

• 16.5

• 16.9

Multiple Choice

2-7 HW: #7 Grass Seed (p. 134)

(b) What is the GREATEST value for the WIDTH of the lawn?

Hint: if everything is being rounded to the nearest WHOLE number, what is the MAXIMUM number that 12 yd CAN NOT BE, but is closest to 12 yd, to the nearest tenth?

• 12.0

• 12.4

• 12.5

• 12.9

Multiple Choice

When is the lock date?

• This Wednesday

• This Friday

• Next Friday

• December

Open Ended

If you have any homework questions, now is the time to put these in here!

Any extra time today after the lesson will be homework time/HW Q&A,

If you don't have any questions at this time, please write "N/A".