panjang sisi alas
= k/4
= 60/4
= 15 cm
diagonal 2
=√15² - 9²
=√225 -81
=√144
= 12 . 2
= 24 cm
volume
= 1/3 . d1 . d2 /2 . t
=1/3 . 24 . 18 /2 . 12
=1/3 . 216 . 12
=864 cm³
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panjang sisi alas
= k/4
= 60/4
= 15 cm
diagonal 2
=√15² - 9²
=√225 -81
=√144
= 12 . 2
= 24 cm
volume
= 1/3 . d1 . d2 /2 . t
=1/3 . 24 . 18 /2 . 12
=1/3 . 216 . 12
=864 cm³