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Warm-up: 1.How much paint would 2. How much metal did it the can hold? take to make the can? 4in 12in.

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Presentation on theme: "Warm-up: 1.How much paint would 2. How much metal did it the can hold? take to make the can? 4in 12in."— Presentation transcript:

1 Warm-up: 1.How much paint would 2. How much metal did it the can hold? take to make the can? 4in 12in

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

3 Lateral “Label” Surface Area = area of rectangle h w r r r h

4 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

5 Remember: Surface Area = 2 × area of circle + area of rectangle Lateral “Label” Surface Area = area of rectangle Lateral “Label” Surface Area = h x w Lateral “Label” Surface Area = h x circumference of circle h w r r r h

6 Remember: Surface Area = 2 × area of circle + area of rectangle Lateral “Label” Surface Area = area of rectangle Lateral “Label” Surface Area = h x w Lateral “Label” Surface Area = h x circumference of circle Lateral “Label” Surface Area = h x d h w r r r h

7 Try it! Find the area of the label. 2in 5in Red Bull

8 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?

9 February, 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.

10 Warm-up Find the surface area. 4cm 10cm 3cm

11 Find the surface area

12 Surface Area = 2 × area of circle + area of rectangle h w r r r h

13 Surface Area = 2 × area of circle + area of rectangle SA = 2 x r 2 + h x W h w r r r h

14 Surface Area = 2 × area of circle + area of rectangle SA = 2 x r 2 + h x w SA = 2 x r 2 + h x circumference of circle h w r r r h

15 Surface Area = 2 × area of circle + area of rectangle SA = 2 x r 2 + h x w SA = 2 x r 2 + h x circumference of circle SA = 2 x r 2 + h x d h w r r r h

16 Try it! Surface Area = 2 × area of circle + area of rectangle 5 w 3cm 5cm

17 Homework 3.3 Surface Area Individual work! Use your flip book, notes or TAKS chart for help.

18 February 17, 2011 Have 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

19 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.

20

21 ~~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.

22 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

23 Algebra Homework Page – – – 27 (10 problems)

24 8 th Math Bring your netbook!

25 Math 8 Homework 1 st period 1 st period Page , 7, 19

26 Math 8 Homework 4 th and 7 th periods Page 373 3, 4, 19, 21, 36

27 Algebra Homework Page , 21, 37, 38 Page 462 5, 6, 7, 14, 25

28 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?

29 8 th Math Susan 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?

30 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?

31 8 th Math David 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?

32 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?

33 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?

34 Warm Up / Review 8 th Math Put the values on a number line. 56/6, 0.1, 86, 13/4, 14, 27/8 __________________________________

35 8 th Math After the Test Page Turn in to the black box

36 --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).

37 Algebra Warm-up Solve and Graph: X + 13 < 8 or -8x< < -4m < 16

38 Algebra Homework Page , 17, 21 & 22 show all work! Page , 20, 22 If you were absent yesterday also include: Page 409 #s 4, 6, 8 (they are easy)


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