A movable section of stage has the shape of an isosceles right triangle. You need to apply 2 coats of paint to all but the bottom. The paint covers approximately 80 square feet per quart. How many quarts of paint do u need to buy? The width is 12 18/25 ft height isc1 1 1/2 and length is 9 ft

9 quarts of paint

Step-by-step explanation:

-Since, the bottom area is not painted, the total area would be the sum of the two isosceles faces and the two remaining rectangles.

#Area of Isosceles faces:

#Area of the two rectangles:

#The total area to be painted is the sum of all faces:

Since, the area would be covered twice and that 1 quart covers 80 sq ft. Let X be the number of quarts of paint:

Hence, you need to buy approximately 9 quarts of paint.

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!