crystal1
A quadrilateral PQRS is inscribed in a circle, as shown below.
What is the measure of arc PQR?
110°
140°
70°
220°



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crystal1
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jim_thompson5910
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Angle PSR is supplementary to angle PQR, so angle PSR is 110 degrees (since 110 + 70 = 180)

jim_thompson5910
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Now use the inscribed angle theorem to find the measure of arc PQR

crystal1
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the answer is b

psi9epsilon
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use the formula to find length of an arc
you will need the value of theta=70
length of arc= (pi * r* theta) / 180

jim_thompson5910
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no, it's not b

crystal1
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oh sorry

laurisve
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its 2220