Question

A group of cubes are arranged in a pattern with the same number of cubes in each row and column. There are 225

cubes in the shape. How many cubes are in one row?
A)
15
B)
25
0
56
D)
75

Answer 1

Given:

Total number of cubes = 225

Cubes are arranged in a pattern with the same number of cubes in each row and column.

To find:

The number of cubes in a row.

Solution:

Let the number of cubes in a row be x.

Since, cubes are arranged in a pattern with the same number of cubes in each row and column, therefore number of cubes in rows and columns are equal.

`\text{Total cubes}=x* x`

`\text{Total cubes}=x^2`

Total number of cubes = 225

`x^2=225`

Taking square root on both sides.

`x=√(225)`

`x=15`

So, the number of cubes in a row is 15.

Therefore, the correct option is A.