PSLE Math 2019 Paper 2 Question 15
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(Jack's Length and Volume of Cubes Question)
PSLE Math 2019 Paper 2 Question 15
(a) Ans: 36
Height of box → 8L ÷ 2 = 4L
2 L = 3S
4L = 6S
No. of small cubes → 6 × 6 = 36
(b) Ans: 4cm
vol. of 36 small cubes → 4032cm^3 × 4/7 = 2304cm^3
vol. of 1 small cube → 2304cm^3 ÷ 36 = 64cm^3
length of 1 edge → ∛64cm^3 = 4cm