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(1/2 sisi alas)² + tinggi ² = sisi miring²
6² + t² = 10²
t² = 100-36
t = √64 = 8 cm.
Maka, volume limas :
V = 1/3 (Luas alas segitiga) X tinggi limas
= 1/3 . 1/2 . alas . tinggi . t limas
= 1/3 . 1/2 . 12 . 8 . 15
= 240 cm³