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ExtremeBDS [4]
3 years ago
7

Please help me with this. i don't understand it.

Mathematics
2 answers:
serg [7]3 years ago
5 0

Answer:

Step-by-step explanation:

1) Rectangular prism:  l = 7.5 cm ; w = 12 cm ; h = 15.5cm

Volume of rectangular prism = l * w * h

Cubes: edge = 0.5cm

Volume of cube = edge *edge * edge

Number of cubes = Volume of rectangular prism ÷ Volume of a cube

                             =\frac{7.5 * 12 * 15.5}{0.5*0.5*0.5}\\\\ = \frac{7.5 * 12 * 15.5*1000}{0.5 *0.5 *0.5 *1000}\\\\= \frac{75 * 12 *155 * 10}{5 * 5 * 5}\\\\=  3 * 12 * 31 * 10\\\\= 11160

11160 cubes will fit in the prism.

2) Volume of prism = 7.5 * 12 * 15.5

                               = 1395 cm³

Vika [28.1K]3 years ago
4 0

Answer:

A. 11160 cubes B. 1395cm^3

Step-by-step explanation:

Volume= length x width x height

Its easiest to solve B. first and use it to solve A.

B. 7.5 x 12 x 15.5 = 1395cm^3 (volume of prism)

A. .5 x .5 x .5 = 1/8cm^3 (which is the volume of the cube)

1395 ÷ 1/8 = 11160

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