Answer:
219
Step-by-step explanation:
The figure has the shape of a trapezoid. We find the area of the trapezoid and subtract the area of the rectangular door.
area of trapezoid = (base1 + base2)h/2
area of trapezoid = (20 ft + 12 ft) * 15 ft / 2
area of trapezoid = 32 ft * 15 ft /2
area of trapezoid = 240 ft^2
area of rectangle = length * width
area of rectangle = 7 ft * 3 ft
area of rectangle = 21 ft^2
area to be painted = area of trapezoid - area of rectangle
area to be painted = 240 ft^2 - 21 ft^2
area to be painted = 219 ft^2
Answer: 219 ft^2
Answer:
See Below
Step-by-step explanation:
Small Box:
9 dollars for 12 pounds
Per pound cost is:
9/12 = $0.75 per pound
Large Box:
18 dollars for 30 pounds
Per pound cost is:
18/30 = $0.60 per pound
Better deal is large box.
To make the deals same, we can change the number of pounds in the large box. We can lessen it so it becomes the same ratio as dollars to pound.
Small box was
9 to 12
Large box is 18 dollars to WHAT?
18 is double of 9 so, "WHAT" should be double of 12, which is:
12 * 2 = 24
So, we can change large box "30" pounds to "24" pounds.
So, the ratio becomes (cost per pound):
18/24 = $0.75 per pound (same)
