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Rainbow [258]
4 years ago
15

What is the area of a 20-gon with radius 5 in

Mathematics
1 answer:
Degger [83]4 years ago
8 0
Assuming that is the circumradius:
Polygon Area = [r^2 * n * sin (360 / n)] / 2
Polygon Area = (25 * 20 * sin (18)) / 2
Polygon Area = (500 * 0.30902) / 2
Polygon Area = <span> <span> <span> 77.255 </span> </span> </span>





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nikdorinn [45]

Answer:

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then,100%-38%=62%

if 38% decrease =$27.28

let,62%decrease=x

by cross multiplying and dividing

x=$44.51 decrease

the sum of the %decrease=100%

also$44.51+$27.28=original price=$71.79

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Is 7/20 less than 0.305
Serggg [28]

Answer:

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Step-by-step explanation:

The easiest way to find out is to make the two figures fraction and make the denominators the same.

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Answer:

12

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