Warm-up:

1.How much paint would 2. How much metal did it

the can hold? take to make the can?

4in

12in

Remember: Surface Area = 2 × area of circle + area of rectangle

h

w

r

r

r

h

Remember: Surface Area = 2 × area of circle + area of rectangle

Lateral “Label” Surface Area = area of rectangle

h

w

r

r

r

h

Remember: Surface Area = 2 × area of circle + area of rectangle

Lateral “Label” Surface Area = area of rectangle

Lateral “Label” Surface Area = h x w

h

w

r

r

r

h

Remember: Surface Area = 2 × area of circle + area of rectangle

Lateral “Label” Surface Area = area of rectangle

Lateral “Label” Surface Area = h x wLateral “Label” Surface Area = h x circumference of circle

h

w

r

r

r

h

Remember: Surface Area = 2 × area of circle + area of rectangle

Lateral “Label” Surface Area = area of rectangle

Lateral “Label” Surface Area = h x wLateral “Label” Surface Area = h x circumference of circle

Lateral “Label” Surface Area = h x d

h

w

r

r

r

h

Try it!

Find the area of the label.

2in

5in Red Bull

A painter is using a brush roller to make

even strokes on the wall. If the diameter of his

roller is 10cm and the length of the roller is 35cm,

how much paint will be applied

with one rotation of the roller?

February, 18 2010

Take out 7i and turn it into the black box.

You will need your calculator

Ruler and ½ sheet graph paper

We will take a practice test.Finish Review for HW and +5 on your test.

Warm-up

Find the surface area.

4cm

10cm

3cm

Find the surface area.

2.6

3

2.6

2.6

3

3

5

55

Surface Area = 2 × area of circle + area of rectangle

h

w

r

r

r

h

Surface Area = 2 × area of circle + area of rectangle

SA = 2 x r2 + h x W

h

w

r

r

r

h

Surface Area = 2 × area of circle + area of rectangle

SA = 2 x r2 + h x w SA = 2 x r2 + h x circumference of

circle

h

w

r

r

r

h

Surface Area = 2 × area of circle + area of rectangle

SA = 2 x r2 + h x w SA = 2 x r2 + h x circumference of

circle

SA = 2 x r2 + h x d

h

w

r

r

r

h

Try it!

Surface Area = 2 × area of circle + area of rectangle

5

w

3cm

3cm

3cm

5cm

Homework 3.3 Surface Area

Individual work! Use your flip book, notes or

TAKS chart for help.

February 17, 2011Have the homework out on your desk.

1. Graph the system of inequality: 2. Graph the inequality:

y > 2x – 1 x + 13 < 8 or - 8x< - 40

x - 2y < 8

3. Graph the inequality:

-1 < - 4m < 16

February 17, 2011

Moodle enrollment key:

deaso6

Complete the Inequalities/Systems Quiz on paper then key in your answers.

After the quiz, begin 7i homework.

~~Math writing~~

What is the difference between perimeter, area and volume?

Write at least ¾ of a page and use

real-life examples in your explanation.

If the cylinder is filled 1 cm high with

water, what is the volume of the water in the

container?

How many layers

will it take to fill

the container?

What is the Volume

of the container?

4

12

Algebra Homework

Page 4693 – 5 15 - 17

22 – 23 26 – 27

(10 problems)

8th Math

Bring your

netbook!

Math 8 Homework 1st period

1st period Page 373

1-4, 7, 19

Math 8 Homework 4th and 7th periods

Page 373

3, 4, 19, 21, 36

Algebra Homework 2-15-11

Page 409

17, 21, 37, 38

Page 462

5, 6, 7, 14, 25

Surface Area --

• EX 2

Henrietta will paint the four walls and ceiling of her room that is 9 feet wide and 14 feet long with a 9 foot ceiling. How many square feet has to be painted if she paints the entire interior of the room?

8th MathSusan is wrapping a gift

for her mom. She purchased perfume that came in a cube

box. The height of the box is 4 inches. How much wrapping paper will she need to cover the box without any

overlap?

Surface Area --

• EX1

Jeremy wanted to make a wooden box with height of 2 feet, width of 4 feet, and length of 3 feet. How much wood is needed to create the hollow box with a lid?

8th MathDavid wants to paint the sides and the top of his dresser. It is 4ft tall, 3 ft wide, and 2 ft

deep. How much square footage will he

need to cover with paint?

Surface Area --

• EX 3

Honey Comb cereal is packaged in a container like the one shown below. If the dimensions of the box are 13 in by 9 in by 3 in, how much cardboard is needed to construct one of the containers?

Surface Area --

• EX 4

Suzanne’s mother bought her a pet gerbil. She is keeping the pet in a box with a length of 8 in, a width of 6in, and a height of 5 in. She plans on covering the sides of the box with contact paper. How many square feet of contact paper is needed if the top of the box is not covered?

Warm Up / Review 8th Math

Put the values on a number line.

56/6, 0.1, 86, 13/4, 14, 27/8

__________________________________0 1 2 3 4 5 6 7 8 9 10

8th Math

After the Test

Page 140 1-12

Turn in to the black box

--Review--1. What is the location half way between point A and the y-axis?

2. Which point is located a distance of 7 units away from the x-axis?

A

C

B

D

E

F

3. What is the location of the point half way between point C and point D?

4. True of false?

Point E is located at (-6, 0).

Algebra Warm-up

Solve and Graph:

1. 2.X + 13 < 8 or -8x< -40 -1 < -4m < 16

Algebra Homework

Page 384 15, 17, 21 & 22 show all work!Page 409 18, 20, 22

If you were absent yesterday also include: Page 409 #s 4, 6, 8 (they are easy)