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Q: What is the inradius of a right-angled triangle?A. The area of the triangle is known.B. Any two sides of the triangle are known.C. The perimeter of the triangle is known.

A. B alone is sufficient
B. A and C together are sufficient
C. Any one statement is sufficient
D. Either B alone or A and C together are sufficient
E. All together are necessary
Answer» E. All together are necessary


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