Tiles are being placed in front of a fireplace to create a trapezoidal hearth. The hearth will have a height of 24 inches and bases that are 48 and 60 inches. If the tiles cover 16 square inches, how many tiles will be needed?

Assume that the tiles can be cut

remember that teh formula for a trapezoid is (base1+base2) times (1/2 height)

height=24

base1=48

base2=60

subsitute

(48+60) times (1/2 24)

108 times 12=1296

now wee find out how many tiles

16 is 1 tile

find how many 16's in 1296

1296/16=81

ans: 81 tiles