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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

1. Circles and Circumference

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Exercise 19 Page 720

Use the Segment Addition Postulate.

14.6

Practice makes perfect

Consider the given diagram.

To find AB we will use the Segment Addition Postulate. We are given that BC= 5.4 units and that ⊙ J has a radius of 10 units. Recall that the diameter is twice the length of the radius, meaning that AC=2 * 10 = 20. We can use this information to find the length of AB.

AB + BC = AC

BC= 5.4, AC= 20

AB + 5.4 = 20

LHS-5.4=RHS-5.4

AB = 14.6

We have found that AB=14.6 units.

Subchapter links

Exercises p.719-723