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zavuch27 [327]
3 years ago
15

This table shows the relationship between the radius of a circular rug and the rug’s area. Which expression could be used to fin

d the area of a circular rug with a radius of r?

Mathematics
2 answers:
topjm [15]3 years ago
4 0

Answer:

πr2

Step-by-step explanation:

Looking at values in the table for radius and area, we see that the relationship between radius (r) and area of a circle is πr2.

motikmotik3 years ago
3 0
The equation for finding the area of a circle using radius is:

A=pi r^2

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On a math test, the students are asked to
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Answer:

Alberto is incorrect. Perimeter is 42 units.

Step-by-step explanation:

Given:

The vertices of the triangle are S(-6.5, -8.5), T(2.5, -8.5),U(2.5, 3.5), \textrm{ and } V(-6.5, 3.5).

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So, the length ST is,

l=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}\\l=\sqrt{(2.5-(-6.5))^{2}+(-8.5-(-8.5))^{2}}\\l=\sqrt{9^{2}+0}=9

Width TU is,

b=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}\\b=\sqrt{(2.5-2.5))^{2}+(3.5-(-8.5))^{2}}\\b=\sqrt{0+12^{2}}=12

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3 years ago
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