2. santiago wants the lateral surfaces of the
ramp to be painted red. how many square feet
of the ramp will be painted red?

262 square feet  of the ramp will be painted red.

Step-by-step explanation:

The lateral surface is surface area of the sides of the ramp without including the top and bottom faces

The ramp shown has three surfaces

The 2 sides are triangles with length 20 and height 8.5

The back is a rectangle shape with length 12 and height 8.5

Step 1: Finding the  Area of triangle

The area of the triangle  =

The area of the triangle  =

The area of the triangle  =    

The area of the triangle = 85 square feet

Area of 2 triangles =  =  170

Step 2: Finding the  Area of Rectangle

Area of rectangle =

so,

Area of back rectangle = = 102  square feet

Step 3: Finding the total lateral surface area

Total Lateral Surface Area

= Area of triangle + Area of Rectangle

= 272 square feet