Maths

Question

1. Each side of a wooden cube is 0.6 m. Find its volume.

2. A rectangular marble stone is 6 cm long, 4 cm wide and 5 cm high. If each 3 cm3 is costs $48.80, how much can be made by selling the stone?

Answer 1

1. Its volume:
0.6 x 0.6 x 0.6 =0.216 M3

2. The volume of the rectangular marble stone : 6 x 4 x 5 =120 cm3
Therefore the cost will be
120/3 x 48.8
= 40 x 48.8
= $1,952

Answer 2

1. Volume = 0.6*0.6*0.6 = 0.216m^3

2. For a cube with 3cm^3, the length, width and height is around 1.44cm

6cm long stone can make 4 cubes with length 1.44cm
4cm wide stone can make 2 cubes with length 1.44cm
5cm high stone can make 3 cubes with length 1.44cm

Hence, it can make 24 cubes with volume 3cm^3
He can make 24*48.8 = $1,171.2

2007-08-29 16:54:51 補充：
2. it just simply (6*4*5)/3 * 48.8 = $1,952