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3 years ago

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A building has 4 stories that are each 15 feet high. A scale drawing has the height of the building at 5 inches.

2 answers:

zlopas [31]3 years ago

8 0

Every 1 inch is 12 feet.

Sindrei [870]3 years ago

7 0

1) a
<span>The building is 4*15 = 60 feet = 720 inches high. The ratio is 720/5 = 144 </span>

<span>2) b </span>
<span>The ratio is 9/(1/4) = 36. So 1 foot = 12 inches and 12/36 = 1/3 </span>

<span>3) c </span>
<span>With a ratio of 1:72, a 7.5 inch wingspan represents 7.5*72 = 45 feet </span>

<span>I hope this helps!</span>

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3 years ago

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Step-by-step explanation:

See attachment for complete question

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4 years ago

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Answer:

a) $\frac{28}{\pi}$ in

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c) 784 in²

Step-by-step explanation:

Let the length be 'L'

and the radius be 'r'

Thus, according to the question

L + 2πr = 84 in

L = 84 - 2πr ............(1)

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substituting the value of L from 1, we get

V = πr²(84 - 2πr)

or

V = 84πr² - 2π²r³

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or

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or

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or

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or

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or

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Therefore,

a) The radius of the largest cylindrical package = $\frac{28}{\pi}$ in

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or

⇒ L = 84 - 56 = 28 in

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c ) The volume of the largest cylindrical package ,V = πr²L

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3 years ago