tile will cost
Mark to purchase .
Explanation:
Here we have , Mark is installing a mosaic tile backsplash and the shape of the tiles are shaped like regular hexagons. Each tile has a radius of 2 in and he needs to cover a rectangular area that measures 132 in by 18 in. Each piece of tile costs 3.49 to buy. We need to find How much will the tile cost Mark to purchase . Let's find out:
We know that area of hexagon is given by :
⇒

According to question , s=2 inch
⇒

⇒

⇒

Now , area of rectangular area :
⇒

⇒

Now , Number of tiles required is : (Area of rectangle )( Area of hexagon )
⇒

It's given that , one tile cost 3.49 , So
will cost :
⇒

⇒

Therefore , tile will cost
Mark to purchase .