How many 3.5 inch by 5 inch tiles will fit on a back splash that is 3.5 feet tall and 7 feet long

Question

i need so much help on this

Answer 1

If you do not take into account the small spaces between each tile, you can just compare the areas.

The area of each tile will be 3.5 in x 5 in = 17.5 in2

The area of the wall is 3.5 ft x 7 ft = 24.5 ft2 x (12 in/ft)2 = 3,528 in2

So, 3528/17.5 = 201.6 tiles