Set 1 Question 8
The points R, T and U lie on a circle that has radius 4. If the length of arc RTU is 4pi/3, what is the length of line segment RU
What is the length of line segment RU?
x =4 pi /3
x/360 = 1/6 --> x=60
assume O is centre of the circle. ROU is equilatral triangle.
line seqment RU must be equal to radius of the circle, which is 4
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