Answer:
Explanation:
is an isosceles triangle, the height divides it into two right triangles, we can solve with Pythagoras by finding 1/2 of x
1/2x =√[ (√45)² - 3²]
1/2x = √(45 - 9)
1/2x = √36
1/2x = 6
x = 6 × 2
x = 12
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