Acustomer is tiling a shower, the main, back wall of which is 6' by 4'.
the tile they want to use is 3" x 6", which comes 20 pieces to a box.
how many pieces of this tile do they need for this project? (no waste)

192 pieces of tiles will be required.

Step-by-step explanation:

A customer is tiling a shower's back wall which is in the dimensions of 6' by 4'

This area of the wall is = 6 × 4 square feet = 24 feet²

Customer wants to cover this wall with the tiles measuring 3" by 6" or 3 inches by 6 inches.

Now we will convert these dimensions of the tiles in foot.

Since 12 inches = 1 foot

Therefore, 1 inch = foot

Dimensions of one tile in foot will be foot by foot.

In simplified form, dimensions of the tile is foot by foot.

Area of one tile = square feet

Number of tiles =

                          =

                          = 24×8

                          = 192 tiles

Therefore, 192 pieces of tiles will be required.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.