Question

it takes 6 cubes to build a staircase with 3 steps. How many cubes will be needed for 11 steps?

Answer 1

6 cubes= 3 steps

? cubes = 11 steps

therefore 6*11/3 = 22 cubes are needed to make 11 steps.

Answer 2

66 cubes.

6 cubes for three steps gives us 1 for the first step 2 for the second and 3 for the third.

1+2+3=6

This is a logical progression which carried to eleven steps give us:

1+2+3+4+5+6+7+8+9+10+11=66

or

12(5)+6=66

Answer 3

It takes 66 cubes to make 11 steps

Answer 4

66 cubes for 11 steps

Answer 5

I don't know but I need to figure out how many cubes for a 30-step staircase. Sorry

Answer 6

66 cubes because because all you have to do is multiply 6 x 11 = 66

Answer 7

If 6 cubes makes 3 steps we can assume that 2 are used for each step. Then 11*2 is 22..?

Answer 8

n X 1/2n + 1/2 n

use this equation where n = number of steps you are trying to find

7 X 3.5 + 3.5 = 28

i had to find 50 steps which is 1275

50 X 25 + 25