Hello There !
The first and most important step to solving this is calculating the surface area of the ramp.To do this, let's figure out the sections and solve them separately.There's the top, which has dimensions of 19.5 ft. by 15.2 ft.There's the two sides, each in the shape of a triangle and with the dimensions of 6 ft. and 14 ft.And there's the back, with dimensions of 6 ft. and 19.5 ft.To find the area of the top, just multiply the width by the height, since it's rectangular.19.5 • 15.2 = 296.4To find the surface area of the sides, use lw/2, which is length times width divided by 2. However, since that's just the dimensions of one of the two sides, we don't have to divide by 2 since we'll end up multiplying it by 2 anyways. So we can just do length times width.14 • 6 = 84Lastly, the dimensions of the rectangular back are 6 and 19.5, and the area can be found by simply multiplying those two.19.5 • 6 = 117Now just add these values and you have the surface area of the ramp!296.4 + 84 + 117 = 497.4So the surface area of the ramp is 497.4 square feet.Now you just need to know how many quarts of paint you need to cover this.Since 1 quart of paint covers 80 square feet, just divide the surface area by 80 and that's how many quarts you need.497.4 / 80 = 6.2175So you need 6.2175 quarts of paint to cover the whole ramp (besides the bottom, of course).But since you can be 0.2175 of a quart, you'll have to buy a full one.Which means you'll have to buy 7 quarts of paint.
If I were you, I would put both the exact amount (6.2175 quarts) and amount you'd have to buy (7 quarts) just to be safe.Hope this helps :)
Or if I got the graph wrong your answer is 160
