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yKpoI14uk [10]
3 years ago
14

working together Jacob and Kayla can clan an attic in 4.24 hours. had she done it alone it would have taken Kayla nine hours. ho

w long would it take Jacob to do alone?
Mathematics
1 answer:
Marizza181 [45]3 years ago
5 0
That’s not enough information to say how long he could do it. He could go slower or faster than her but by how much if so. So it’s not enough info.
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does somebody knows how to do this one?
vlada-n [284]

Answer:

Step-by-step explanation:

To find the area subtract the area of the semicircle from the area of the rectangle.

Although the line isn’t there, if you imagine there is one, then you will see that you form a rectangle which is the same line as the semicircle’s diameter.

The area of rectangle is:

⇒ A = lw

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The area of the semicircle;

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⇒ A = \frac{1}{2}\pi (7)^{2}

*Note here that the radius is half the diameter, so it is 7cm, not 14cm

⇒ A = 76.97cm^{2}

Finally subtract the two areas;

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2 years ago
Round 2344.7968574 to the nearest hundred-thousandth
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Answer:

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But it can be equal to
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Giving 45 points! I need help!
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