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Arcs Of Circles |
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Lesson 1 |
Problem: In circle O, the radius is 150, and the measure of minor arc ST is 100 degrees. Find the length of
minor arc ST to the nearest integer.
Solution Arc length = (Central angle /360°) x circumference
Step 1:
Solution Arc length = 100°/360° x 2 x π x r
Step 2:
Solution = 100°/360° x 2 x 3.14 x 150 = 261.68
Step 3:
Solution The answer is: 261.68
Step 4:
Complete
Try two practice problems:
Do the following:
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A. |
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A circular track has a radius of 90 feet. The distance of point S to point R is 90. Find to the nearest degree, the measure of minor arc. |
B. |
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In circle O, the radius is 150, and the measure of minor arc GM is 210 degrees. Find the length of minor arc GM to the nearest integer. |
