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= √(25 - 9)
= √16 = 4
Luas trapesium samping = 1/2 x (9 + 6) x 4
= 1/2 (15) x 4
= 30
Volume = luas trapesium x panjang = 30 x 20 = 600 cm³ (B)
34. Volume = 1/2 x 3/4 x (4/3 x 22/7 x 14³)
= 1/2 x 22/7 x 2.744
= 4.312 cm³ (D)