Jawabanmu

2014-09-02T21:25:23+07:00
( \frac{ \pi }{2})^{2}= ( \frac{ \pi }{2})( \frac{ \pi }{2})= \frac{ \pi ^{2}}{2^{2}} =\frac{(3,14)^{2}}{4}= \frac{9,8596}{4}= 2,4649

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