WAEC - Mathematics (2005 - No. 42)
A rectangular packet has inner dimension 16cm by 12cm by 6cm. How many cubes of sugar of side 2cm can be neatly packed into the packet?
90
144
150
288
คำอธิบาย
Volume of rectangular packet = (16 x 12 x 6)cm3 = 1152cm3. Volume of cube of sugar = 2 x 2 x 2 = 8cm
∴ The number of cubes f sugar \(=\frac{1152}{8}=144\)
∴ The number of cubes f sugar \(=\frac{1152}{8}=144\)