A) 15 cm
B) 20 cm
C) 30 cm
D) 10 cm
Correct Answer: C
Solution :
\[A{{C}^{2}}=A{{E}^{2}}+C{{E}^{2}}\]or \[{{R}^{2}}={{a}^{2}}+{{(R-t)}^{2}}={{a}^{2}}+{{R}^{2}}-2Rt+{{t}^{2}}\]You need to login to perform this action.
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