How many 1ft tiles are needed if the perimeter is 172 ? The rectangle is 60 x 26 !! So I took 60x2 + 26x2 =172 I'm thinking bc the tiles 1ft square so 172
No, you are filling the rectangle with the tiles, so we are talking about AREA.
area = 60 x 26 = 1560
so you need 1560 tiles
(the fact that the perimeter is 172 ft was not needed, we could have calculated that anyway)