Nine Comment The figure consists of 2 figures, a rectangle and a trapezoid. You should break them up and find the area of each separately and add to get the total.
<u>Rectangle.</u> Area = L * W L = 40 yd W = 25 yd. Area = 40 * 25 = 1000 square yards.
<u>Trapezoid</u> B1 = 40 yards B2 = 65 yards H = 55 - 25 yards H = 30 yards Area = (B1 + B2)* H / 2 Area = (40 + 65)*30 / 2 Add the 2 bases together. Area = ( 105) * 30 / 2 You can divide either the 30 or the 105 by 2. Do the 30 Area = (105) *15 Area = 1575 square yards.
<u>Find the total Area</u> Total Area = rectangle + trapezoid Total Area = 1000 + 1575 Total Area = 2575 <<<<< Answer
Ten Comment Assume the other side has no windows or doors. Both sides consist of 1 triangle and 1 rectangle. <u> Problem A Rectangle</u> Area = l * w L = 28 feet W = 8.5 feet Area = 28 * 8.5 Area = 238 square feet.
<u>Triangle</u> Area = 1/2 Base * Height Base = 28 feet Height = 12.5 - 8.5 Height = 4 Area = 1/2 * 28 * 4 Area = 56 square feet.
<u>Total Area (1 Side)</u> Total Area (1 Side) = 56 + 238 Total Area (1 side) = 394
<u>Total Area (Both sides)</u> Total Area (both sides) = 2 * 294 Total Area (both sides) = 588 square feet.
Problem B Comment You have 588 square feet. First figure out the number of bundles and then calculate the cost.
<u>Bundles</u> Bundles = Total Square Feet (Rounded up) / 100 Bundles = 588 / 100 = 5.88 bundles. But you cannot buy 0.88 bundles So you have to round up, otherwise you'll have a bit of the building uncovered.
You may not care in reality, but the question does. So your answer is that you have 6 bundles.
<u>Cost</u> 1 bundle costs 75 dollars. 6 bundles cost x
1/6 = 75 / x x = 6 * 75 x = 450 dollars <<<<< Answer 10B
