Jawabanmu

2014-05-22T14:42:18+07:00
t  =  \sqrt{25^{2} - 8^{2} }=  \sqrt{626-64} =  \sqrt{561}  \\ V = \frac{1}{3} . \sqrt{128}^{2} .  \sqrt{561}= \frac{1}{3}.128.\sqrt{561}

sisanya hitung sendiri y,, ribet koq. sorry