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Veseljchak [2.6K]
3 years ago
13

What is the best approximation for the area of a circle diameter of 19 m?

Mathematics
1 answer:
Maslowich3 years ago
7 0
The formula for an area of a circle is 
A=pi times radius squared

there for you do pi times 9.5 to the power of two/squared (radius is half of the diameter so 19 divided by 2 is 9.5) 

pi times 9.5 squared 
= 283.5

I rounded to the nearest tenths


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How many times larger is the value of 42.38 compared to 4.238
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5 0
3 years ago
Can some one please help me <br> will give 94 points for it
NNADVOKAT [17]
You can solve this by using "similar triangles".

In triangle ABC, we are looking for side AC which is x. Side AC is similar to side DF in triangle EDF.

You can solve for side x by picking two sides in triangle ABC and their corresponding sides in triangle EDF. This is what I mean:
\frac{AC}{BC} =  \frac{DF}{EF}
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x = 5.5 \: units
To solve for y, do the same thing. Pick two sides on triangle ABC and their corresponding sides in triangle DEF.
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We have the value x to be 5.5 units and y to be 6 units.

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3 years ago
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