P, Q, R কেন্দ্র বিশিষ্ট তিনটি বৃত্ত পরস্পর স্পর্শ করে আছে। PQ = x, QR = Y এবং RP = 2 হলে Q বৃত্তের ব্যাস কত হবে?
Created: 8 months ago |
Updated: 7 months ago
best des
p+q=x…….. (1)
q+r=y……….(2)
r+p=z …….. (3)
(1)-(3) => p+q-r-p = x-z
=> q-r = x-z ………(4)
Now, (2)+(4)
q+r+q-r = x+y-z
=> 2q= x+y-z
Right Answer: x+y-z
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