UPSC CDS 2 2021 Math Paper

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Directions (Q.Nos. 51-53) Consider the following for the next three questions that follow.
ABC is a triangle with sides AB=6cm, BC=10cm and CA=8cm. With vertices A,B and C as centres, three circles are drawn each touching the other two externally.
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Question : 52 of 100
 
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What is the length of the altitude of the triangle drawn from vertex A on BC ?
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