Please take a new warm up template and complete the

warm up!

Tuesday, March 13th

Warm Up1 and 2

Find the area of the shape

4 in 4 in

6.2 in

2 in

Joke of the DayBasketball Week

Why are basketball players

messy eaters?

They are always dribbling

Week at a GlanceToday: SA and V of Prisms

Wednesday: Pi Day! Prism ActivityThursday: SA and V Cylinders Friday: *Progress Reports

Cylinder and Prism ActivityMonday: Checkpoint Prisms & Cylinders

• Keep everything in the FRONT of your binder (goal sheet, warm ups, syllabus, CRCTS< etc.)

• Put everything GRADED in your PORTFOLIO

• Throw everything else away

Binder Clean out

Composite Figures Worksheet

Due at 2:10

The surface area of a three-dimensional figure is the sum of the areas of its surfaces. Units squared!

To help you see all the surfaces of a three-dimensional figure, you can use

a net. A net is the pattern made when the surface of a three-dimensional figure is layed out flat showing each face of the figure.

COVER

Rectangular PrismsRectangular Prisms- have a total of 6 faces. We need to find the area for all 6 faces, and then add them together (remember- some faces will be congruent)

Part 1: Surface Area 1. Using a Net

2. Using a Formula

Find the surface area S of the prism.Use a net!

Draw a net to help you see each face of the prism.

Use the formula A = lw to find the area of each face.

#1 Try Together!

Finding the Areas of each!

A: A = 5 2 = 10B: A = 12 5 = 60C: A = 12 2 = 24D: A = 12 5 = 60E: A = 12 2 = 24F: A = 5 2 = 10

S = 10 + 60 + 24 + 60 + 24 + 10 = 188Add the areas of each face.

The surface area is 188 in2.

#2 You Try

Let’s Label the Rectangles!

You Try #3Rectangle

Remember!Area of a TRIANGLE is

½ x b x h

You Try #2Triangular Prism

12 in5 in

4 in

It has FIVE faces!

Surface Area with Formulas

#1 Try Together!SA= 2(lw)+2(wh)+2(lh) SA=_____________+_____________+___________ SA=_____________+_____________+___________ SA=_________ 

#2 You Try! SA= 2(lw)+2(wh)+2(lh) SA=_____________+_____________+___________ SA=_____________+_____________+___________ SA=_________ 

Why is finding Surface Area of a cube going to be easier?

Since a cube has 6 faces we can really find

the area of just ONE face and then MULTIPLY

it by 6!

Cube: Try together!

7 in

1 face= 7 x 7=49

49 x 6 =

Part 2: Volume

It takes 10, or 5 · 2, centimeter cubes to cover the bottom layer of this rectangular prism.

There are 3 layers of 10 cubes each to fill the prism. It takes 30, or 5 · 2 · 3, cubes.

Volume is expressed in cubic units, so the volume of the prism is 5 cm · 2 cm · 3 cm = 30 cm3.

VOLUME

• To find the volume of any prism, you can use the formula V= Bh. Where B is the area of the base, and h is the prism’s height.

• The base of a RECTANGULAR prism is a rectangle so the base is: l x w

• To find the volume of a triangular prism, B is the area of the triangular base so the base is: ½ x b x h

FORMULA SHEET

a=Bh Rectangular Prism: l x w

Cylinder Prism: π 𝒓 ²

V = lwh Write the formula.

V = 26 • 11 • 13 l = 26; w = 11; h = 13

Multiply.V = 3,718 in3

13 in.

26 in.11 in.

#1 Try Togetherv=Bh

B= l x w

V = lwh Write the formula.

V = 29 • 12 • 16 l = 29; w = 12; h = 16

Multiply.V = 5,568 in3

16 in.

29 in.12 in.

#2 Try Togetherv=Bh

B= l x w

A rectangular prism with base length 6 ft, width

5 ft, and height 7 ft

#3 You Try!a=Bh

B= l x w

V = Bh Write the formula.V = ( • 3.9 • 1.3) • 41

2__ B = • 3.9 • 1.3; h = 4.1

2__

Multiply.V = 10.14 m3

#3 Try Together!a=Bh

B= ½ x b x h