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OpenStudy (anonymous):
The surface area of a rectangular prism is 15 m2. What is the surface area of this prism, measured in cm2?
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OpenStudy (ipwnbunnies):
Do you know how many centimeters are in a meter?
OpenStudy (anonymous):
10 or 20
OpenStudy (ipwnbunnies):
No, there are 100 centimeters in a meter.
OpenStudy (ipwnbunnies):
\[(15 m^{2})(\frac{100 cm}{1 m})^{2}\]
OpenStudy (ipwnbunnies):
100/1 is our conversion factor, because we need centimeters. So we eliminate the meters.
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OpenStudy (ipwnbunnies):
BUT, we also need SQUARE centimeters for the area. So, we also square the conversion factor.
OpenStudy (anonymous):
A.
0.0015 cm2
B.
0.15 cm2
C.
150,000 cm2
D.
1500 cm2
OpenStudy (ipwnbunnies):
What'd you get when you did the math? Make sure to square the conversion factor first.
OpenStudy (anonymous):
a or b
OpenStudy (ipwnbunnies):
Neither...Do the math.
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OpenStudy (anonymous):
never mind its d
OpenStudy (ipwnbunnies):
Not quite...
OpenStudy (ipwnbunnies):
(100cm/1m)^2 = 10000 cm^2 per m^2.
15*10000 = 150,000 cm^2
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