Math Surface Area of Prisms
Surface Area of Prisms 2.0
You can see
that the highlighted
surfaces are
congruent.
You can see
that the highlighted
surfaces are
congruent.
You can see
that the highlighted
surfaces are
congruent.
That's where the
2 comes from.
Find the surface area on paper.
Start with the first part of the formula,
2(lxh) then continue to check.
2(6x4)=48
start with 2(         )
l    h
x
2(6x4)=48
        Next 2(         )
2(3x4)=24
w   h
x
2(6x4)=48
        Next 2(         )
2(3x4)=24
l     w
x
2(6x3)=36
2(6x4)=48
Now add the totals
48+24+36=108cm2
2(3x4)=24
2(6x3)=36
What is the surface area?
216 square centimeters
384 square centimeters
432 square centimeters
512 square centimeters
What is the surface area?
432 square centimeter
What is the surface area?
140 square meters
220 square meters
440 square meters
500 square meters
What is the surface area?
220 square meters
What is the surface area?
84 square meters
468 square meters
160 square meters
168 square meters
What is the surface area?
168 square meters
Look at the figure and think about how many sides it
has.  Use paper and pencil to total the surface area.
On a triangular prism you can add up the
surface areas if you know them.
Each triangle has an area
of 6 square meters (sq m).
Each triangular surface has
an area of 10 square
meters (sq m).  What is the
surface area of this figure?
42 sq m
36 sq m
26 sq m
16 sq m
On a triangular prism you can add up the
surface areas if you know them.
Each triangle has an area
of 6 square meters (sq m).
Each triangular surface has
an area of 10 square
meters (sq m).  What is the
surface area of this figure?
42 sq m
On a triangular prism you can add up the
surface areas if you know them.
30+12= 42
10 +10+10 = 30

two triangles
three rectangles
6+6=12
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