1. BRAIN BLITZ/Warm-UP Calculate the Surface Area: 1) 2) Volume: 1) 5 cm
Name:________________________________________________________________________________Date:_____/_____/__________
BRAIN BLITZ/Warm-UP
Calculate the Surface Area:
SA= 2𝝿r² + 2𝝿rh
14 cm
6 cm 1)
SHOW WORK: 2)
9 cm
5 cm
Volume:
V = lwh 1)
SHOW YOUR WORK: 2)
Changing Attributes:
Mrs. Dyson’s coffee mug holds 460 cubic cm of liquid. Mrs. Lopez’s mug is the same size, but HALF the height. How much coffee does Mrs. Lopez’s mug hold?
12.5 cm
4.2 cm
3.5 cm
9 cm
5 cm
V = 𝝿r²h

2. To calculate the surface area of rectangular prisms.
Today’s Lesson:
What:
Surface area of
RECTANGULAR prisms
Why:
To calculate the surface area of rectangular prisms.

3. Net version of rectangular prism
length
width
height
SA= 2lw + 2lh + 2wh
Right/
Left
Top/
Bottom
Front/
Back
BACK
TOP
RIGHT
LEFT
FRONT
BOTTOM
Net version of rectangular prism

4. Surface Area Formula Animated
Take a look:
Website with animated explanation . . .
Surface Area Formula Animated

5. Rectangular PRISMS: 1) SA = 256 cm² 5 cm 4 cm 12 cm
SA= 2lw + 2lh + 2wh
12 cm
5 cm
4 cm
SA = 256 cm²

6. Rectangular PRISMS: 2) SA = 168 cm² 2 cm 14 cm 3.5 cm
SA= 2lw + 2lh + 2wh
3.5 cm
14 cm
2 cm
SA = 168 cm²

7. SA = 192 in² Surface area word problem:
Bob is wrapping a present that is 12 inches long, 4 inches wide, and 3 inches tall. What is the minimum amount of wrapping paper required?
SA= 2lw + 2lh + 2wh
SA = 192 in²

8. END OF LESSON
The next slides are student copies of the notes/handouts for this lesson. These were handed out in class and filled-in as the lesson progressed.

9. Rectangular Prism Net Directions: Cut along the OUTSIDE bold lines.
Calculate the area of EACH rectangular face (Formula: A = lw)
Calculate the TOTAL surface area by adding the area of ALL six faces together.
4) Circle your final answer.

10. Net version of rectangular prism
Math-7 NOTES
DATE: ______/_______/_______
What: surface area of RECTANGULAR prisms
Why: To calculate the surface area of rectangular prisms.
NAME:
Net version of rectangular prism
length
width
height
SA= 2lw + 2lh + 2wh
Top/
Bottom
Right/
Left
Front/
Back
3.5 cm
14 cm
2 cm
Rectangular PRISMS:
1) )
12 cm
5 cm
4 cm
Surface area word problem:
Bob is wrapping a present that is 12 inches long, 4 inches wide, and 3 inches tall. What is the minimum amount of wrapping paper required?

11. “surface area of prisms”
DATE: _____/______/_____
NAME:___________________
Math-7 homework
“surface area of prisms”
Prisms:
SA= 2lw + 2lh + 2wh 1. 2. 3. 4. 5. 6.
Suzanne has a jewelry box she wants to cover with wallpaper to match her room. Her box is 12 cm long, 6 cm wide, and 5 cm high. How much paper will she need to cover the box?
What is the surface area of a cardboard carton if it is 14 inches wide, 10 inches tall, and 16 inches long?
Mark had an old trunk he wants to use in his living room. He plans to use some upholstery fabric to cover the entire surface. How much fabric will he need if it is 4 ft. long, 2 ft wide, and 2.5 ft tall?