Question 1197556
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Hi 
 Trapezoid: an altitude of 32-ft and bases of 40-ft and 50-ft
Area = {{{((b[1] + b[2])/2))}}}*h ={{{ ((40+50)/2)*12}}} = 540ft^2
One carton of tiles has a coverage of 45-sq.ft:  540ft^2/45ft^2 = 12 cartons
Allowing for 5% waste, how many cartons of tile are purchased for the job? 12

Wish You the Best in your Studies.
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