Find the surface area of the pyeramid.

336

Step-by-step explanation:

triangles formula is base by height divided by two but since there are 4 triangles multiply the number you would get for triangles by 2 and then you would add the square

all 4 triangles are 272 and the square is just 64

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

answer: y=4000x+14000

step-by-step explanation: