Mind Breaker
That given a circle which has diameter 5.5 cm. If RP is a diameter, O is the central of circle, AS = 1.1 cm, and OABC is a rectangle. So how long is AC? (Mahir Olympiade Matematika SMA, 2008)
Inspiring You
Luqman is a coder from Indonesia, 21 years old. He has special ability to convert warm milk into lines of code. He loves travelling, reading, good at beating his friends in table tennis too. Also he is a fan of AKB48, sometimes playing piano. He will get his bachelor degree in Computer Science from Institut Teknologi Bandung, soon.
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