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m_a_m_a [10]
3 years ago
8

A little girl got a new puppy and wants to keep track of its growth. Every week she measures the puppy's length from head to tai

l in inches. What would represent the output of the relation?
- The size of the puppy's head
-The length of the puppy from head to tail
-The amount of time she has the puppy
-How fast the puppy grows
Mathematics
1 answer:
Grace [21]3 years ago
4 0

Answer:

Well I would say it is D.

Step-by-step explanation:

I say D because if she is measuring it every week then she is wanting to know how fast the puppy grows.

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EXPLANATION

Let R be the radius of the bigger circle and r, be the radius of the smaller circle.

Then their ratio is given as,

R:r=3:1

We can rewrite it as fractions to get,

\frac{R}{r} = \frac{3}{1}

We make R the subject to get,

R = 3r

The area of the bigger circle can be found using the formula,

Area=\pi {r}^{2}

This implies that,

Area=\pi ({3r})^{2}

Area=9\pi {r}^{2}

But it was given in the question that, the area of the bigger circle is 27π.

27\pi=9\pi {r}^{2}

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This means that,
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The area of the smaller circle is therefore

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so
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