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Mathematics 23 Online
OpenStudy (anonymous):

How many degrees are in the "Comedy" sector of the graph? Round your answer to the nearest degree

OpenStudy (anonymous):

OpenStudy (aivantettet26):

no radius?

OpenStudy (anonymous):

?

OpenStudy (anonymous):

there is options

OpenStudy (anonymous):

no radius

OpenStudy (anonymous):

25 45 72 90

OpenStudy (aivantettet26):

it's 72

OpenStudy (aivantettet26):

By counting all the sectors of the given pie graph 27+16+25+20+15+22 = 125

OpenStudy (aivantettet26):

therefore the circumference of the pie graph is 125 and the equation for the circumference of a circle is C =2pi r

OpenStudy (aivantettet26):

125 = 2pi r 125 / 2pi = r r = 19.89

OpenStudy (aivantettet26):

the equation for the sector of a circle is s = theta r

OpenStudy (aivantettet26):

\[s = \theta r\]

OpenStudy (aivantettet26):

Note! theta in radians!

OpenStudy (aivantettet26):

since the measurement of the sector for the comedy is 25 therefore, 25 = theta (19.98)

OpenStudy (aivantettet26):

theta = 25 / 19.98

OpenStudy (aivantettet26):

theta = 1.257

OpenStudy (aivantettet26):

convert to degrees

OpenStudy (aivantettet26):

1 rad = 57.2957795 deg

OpenStudy (aivantettet26):

1.257 * 57.2957795 = 72 degrees

OpenStudy (anonymous):

thanks

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