resaaa1 resaaa1

05-04-2017
Mathematics

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A model rocket is built to a scale of "3cm= 5 meters. If the model is 7.4 cm tall how tall is the actual rocket?

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grt1023 grt1023

05-04-2017

3cm/5m=7.5cm/x
Cross multiply
3x=37.5
Divide by 3 to isolate x
x=12.5m

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