The length of a hybrid car is 174 inches. What would the length of a scale model of this car if the scale used is 1 inch : 1 foo
t?
2 answers:
By dividing 174 by 12, you find the real car is 14.5 feet long. If the scale model used a scale of 1 in:1 ft, the model would be 14.5 inches long.
scale factor is
1 inch -> 1 foot
174 inch -> 174 ×1 = 174 feet
so length of scaled model of car would be 174 feet
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Answer:
12 cans
Step-by-step explanation:
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radio = half diameter = 4.5 ft.
base: ![A_{b} =\pi r^{2} =\pi (4.5)^{2} =20.25\pi](https://tex.z-dn.net/?f=A_%7Bb%7D%20%3D%5Cpi%20r%5E%7B2%7D%20%3D%5Cpi%20%284.5%29%5E%7B2%7D%20%3D20.25%5Cpi)
Top: = base ![=20.25\pi](https://tex.z-dn.net/?f=%3D20.25%5Cpi)
cylinder: ![2\pi rh=2\pi (4.5)(16)=144\pi](https://tex.z-dn.net/?f=2%5Cpi%20rh%3D2%5Cpi%20%284.5%29%2816%29%3D144%5Cpi)
Total area to paint: ![144\pi +2(20.25\pi) =184.5\pi =579.6sq.ft.](https://tex.z-dn.net/?f=144%5Cpi%20%2B2%2820.25%5Cpi%29%20%3D184.5%5Cpi%20%3D579.6sq.ft.)
Number of cans of paint:
![c=\frac{579.6}{50} =11.59=12](https://tex.z-dn.net/?f=c%3D%5Cfrac%7B579.6%7D%7B50%7D%20%3D11.59%3D12)
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Step-by-step explanation: