SOLUTION: A stage floor shaped like a trapezoid with bases of 60 feet and 75 feet and a height of 40 feet is to be covered with plywood for a play. what would be the cost for the plywood if

Algebra ->  Surface-area -> SOLUTION: A stage floor shaped like a trapezoid with bases of 60 feet and 75 feet and a height of 40 feet is to be covered with plywood for a play. what would be the cost for the plywood if       Log On


   



Question 1056768: A stage floor shaped like a trapezoid with bases of 60 feet and 75 feet and a height of 40 feet is to be covered with plywood for a play. what would be the cost for the plywood if it sells for $0.60 square foot?
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!
To solve, we first need to figure out the area of the trapezoid, and then multiply that answer by $0.60 per sq ft.
Area of a trapezoid:
A+=+%28%28a%2Bb%29%2F2%29h
Where
a, b are the bases
and h is the height
Note that a,b, and h are all given in the problem statement:
a = 60
b = 75
h = 40
A = %28%2860%2B75%29%2F2%29+%2A+40
= 2700 sqft
C = cost of plywood = 2700 sqft * $0.60/sqft = $1620