I really need help on this question:( can anyone help me out real quick

Mathematics

2 answers:

dsp733 years ago

5 0

Answer:

The last answer choice

Step-by-step explanation:

The formula for the area of a circle is $\pi r^2$ , where r represents the radius. In this case, $\pi \cdot 20^2=400\pi$ . Hope this helps!

Misha Larkins [42]3 years ago

4 0

Answer:

400 pie square inches

Step-by-step explanation:

Area of a circle is calculated by pie x radius squared,

so 3.14 x 20 x 20 = 1,256.

400 x 3.14 is equal to 1,256, so thats your answer.

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Add mAh discord: mia~

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Step-by-step explanation:

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3 years ago

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-Help me with this math graph I’ll give a lot of points for correct answer and work <br> *brainlist*

loris [4]

Check the picture below.

the constant of proportionality, namely the slope, for the original rectangle will just be 4/2 = 2, and for the dilated version shown that he did, it'll be 20/10 = 2.

part B)

we know the slope is 2, or 2/1 so then

$\bf \cfrac{length}{width}\implies \stackrel{\stackrel{slope}{\downarrow }}{\cfrac{rise}{run}}\implies \cfrac{2}{1}~\hspace{2.7em}\stackrel{\textit{using a rectangle with a lenght of 14~\hfill }}{\cfrac{14}{w}=\cfrac{2}{1}\implies 14=2w\implies \cfrac{14}{2}=w\implies 7=w}$