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t = 25² - 12²
t = 625 - 144
t = √481
KM= √ 2x²
14 = x√2
x = 14 : √2
x = 7√2 cm
luas alas = 7√2 x 7√2
= 98 cm
v = 1/3 x la x t
v = 1/3 98 x √481
v = 98/3 √481 cm³
semoga membantu, dan jangan lupa jadikan jawaban yg terbaik
kalo ada yg gak jelas, tanyakan saja :)