pakai Cara no 13 fast response

[tex]volume = \frac{1}{3} \times luas \: alas \times t \\ t = \sqrt{ {17}^{2} - {8}^{2} } = 15 \\ volume = \frac{1}{3} \times 20 \times 16 \times 15 = 1600 \: {cm}^{3} [/tex]