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4 x 5 x 2 = 40cm3
We know that density=mass/volume so the density of the cube= 16 g (the mass)/64 cubic cm= 0.25 g/cubic cm
96 cm.^2
The formula for the volume of a cube is height x width x length, therefore V = 4cm x 4cm x 4cm V = 64cm3
The circumference of a circle with a radius of 4cm is: 25.13 cm (r x 2 x pi)