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jadi LA = d1.d2 : 1/2
gunakan pytagoras untuk menemukan d2 = 100 :4= 25
25" -7" = 625-49= √576 = 24cm
= d1.d2 : 1/2 = 14.24 :1/2 = 168cm
v= 168 . 18 = 3024cm3
d2 = √25² - (14/2)² = √625 - 49 = √576 = 24 cm
Volume = Luas alas x tinggi
= (1/2 x 24 x 14) x 18
= 3024 cm³