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Question

InΔABC, a = 13 cm, b = 12 cm and c = 5 cm. Then, the distance of A from BC is


A

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B

60/13 cm

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C

65/12 cm

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D

144/13 cm

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Solution

The correct option is B

60/13 cm


Since, a = 13 cm, b = 12 cm, c = 5 cmNow,(13)2=(5)2+(12)2So,ΔABC is a right angled triangleArea=12×5×12=30cm2Again, area=12×BC×AD30=12×13×ADAD=6013cm


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