1. Surface Area

2. Surface Area = the total of the areas of each surface (side) of a figure.

3. Find Surface Area: 9 m 4 m 5 m 4 m 5 m Rectangle: 9x4 = 36
___________________
Sum of all areas = 202 m2
9 m
9 m
9 m
9 m
4 m
4 m
5 m
5 m
4 m

4. Find Surface Area: 8 cm 7 cm 5 cm 12 cm 7 cm Triangle: ½ x 5 x 7= 17.5
Rectangle: 5 x 12 = 60
Rectangle: 7 x 12 = 84
_______________________
Sum of all areas = 263 cm2
5 cm
12 cm
12 cm
7 cm
7 cm

5. Finding Surface Area without a net…

6. Find Surface Area:
Sketch the shape and dimensions of each surface (side). Sketch each surface of the prism.
5 m
5 m
6 m
6 m
16 m
16 m
16 m
16 m
16 m
5 m
6 m
6 m
5 m
5 m
6 m

7. Find areas:
Rectangle = 16 x 6 = 106
Rectangle = 16 x 5 = 90
Rectangle = 6 x 5 = 30
Sum of all areas: 452 m2
5 m
5 m
6 m
6 m
16 m
16 m
16 m
16 m
16 m
5 m
6 m
6 m
5 m
5 m
6 m

8. Find Surface Area:
Sketch the shape and dimensions of each surface (side).
5 mm
10 mm
16 mm
7 mm
7 mm

9. THERE ARE 5 SURFACES! FIND AREA OF 5 SURFACES AND ADD TOGETHER!
Find Surface Area:
Sketch the shape and dimensions of each surface (side).
THERE ARE 5 SURFACES! FIND AREA OF 5 SURFACES AND ADD TOGETHER!
5 mm
10 mm
7X16= 112
10X16= 160
1/2X5X10=25
16 mm
7 X 16
7 X 16
= 434 mm2
7 mm
7 mm
½ X 5 X 10
½ X 5 X 10
10 X 16

10. THE END…
Now you practice! 