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anuraj chauhan

· started a discussion

· 1 Months ago

wrong answer (Question: 233260.0 )

recheck the question. neither area nor sides follow.

Question:
Suppose \(\Delta\)ABC be a right-angled triangle where \(\angle \)A = 90o and AD \(\perp \) BC. If \(\triangle\)ABC = 40 cm², \(\triangle\)ACD = 10 cm² and \(\overline{AC}\) = 9 cm, then the length of BC is:  
Options:
A) 12 cm 
B) 18 cm
C) 4 cm
D) 6 cm
Solution:

Ans: (b)

Alpha One

· commented

· 1 Months ago

@Knowledge Expert - sir, answer should not have changed in a maths question on using different methods. But here the answer changes, implying that the values in the question don't support one another.

Knowledge Expert

· commented

· 1 Months ago

Dear student,

given question is correct, and it is solved by the property of similarity between triangle.

Keep learning keep solving
Best wishes
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