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Jawaban:
18. A
19. B
Penjelasan dengan langkah-langkah:
18.
V kubus yg terisi pasir
= 3/4 × 25 ×25×25
= 11.718,75 ( jawaban A)
19.
V = 110.592
r³ = 110.592
r = 48 cm (jawaban B)
Jawaban:
Matematika tentang bangun ruang
Diketahui :
Sisi = 25
Rumus volume kubus = sisi x sisi x sisi
Volume kubus = 25 cm x 25 cm x 25 cm
Volume kubus = 15.625
Volume pasir = 3/4 dari volume kubus
Volume pasir = 3/4 x 15.625
Volume pasir = 11.718,75
(nomor 18)
Volume kubus = 110.592
110.592
= sisi x sisi x sisi
110.592
= 
sisi =![\sqrt[3]{110.592}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B110.592%7D "\sqrt[3]{110.592}")
![\sqrt[3]{cm^{3} }](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Bcm%5E%7B3%7D%20%7D "\sqrt[3]{cm^{3} }")
sisi = 48 cm (nomor 19)