3. Nadia has 2020 one-centimetre cubes. She makes the largest cube possible using some of
the 2020 cubes. How many cubes does she have left over?

Respuesta :

The dimensions of the length, width, and height of the cube Nadia

makes are equal.

Correct response:

  • The number of cubes Nadia have left is 292 cubes

Methods used to calculation

Number of cubes Nadia has = 2020 one-centimeter cube

The solid she makes using the cube = The largest cube possible

Required:

The number of cubes Nadia has left.

Solution:

The number of cubes Nadia uses is given by the largest number less

than 2020, that has a perfect cube root, which is given by cube of the

whole number part of the cube root of 2020, as follows;

Let x represent the cube root of the cubes Nadia uses

√(2020) ≈ 12.64

Which gives the cube root of the largest number with a perfect cube root is x = 12

Therefore, the number is x³ = 12³ = 1,728

The number of cubes Nadia uses = 1,728 cubes

  • The number of cubes she has left = 2,020 cubes - 1,728 cubes = 292 cubes

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