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Find the measure of of RA.
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5 votes
Find the measure of of RA.

Find the measure of of RA.-example-1
User PandaPowder
by
8.2k points

1 Answer

6 votes

Answer:

RA = 24

Explanation:

Since the triangle is isosceles ( 2 equal sides ) , then LU is a perpendicular bisector , so

AU = RU , that is

4r = 18 - 2r ( add 2r to both sides )

6r = 18 ( divide both sides by 6 )

r = 3

Then

RA = 18 - 2r + 4r = 18 + 2r = 18 + 2(3) = 18 + 6 = 24

User Maheshwar Ligade
by
8.3k points
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