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What is the length of the Radius if AB is tangent to OB
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What is the length of the Radius if AB is tangent to OB

What is the length of the Radius if AB is tangent to OB-example-1
User Ihar Sadounikau
by
3.6k points

1 Answer

9 votes

Answer:

r = 5 units

Explanation:

One way is to use the Pythag Theroem

12 ^2 + r^2 = (8+r)^2

144 + r^2 = 64 + 16r + r^2

80 = 16 r r = 5

User DanielCuadra
by
3.5k points
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