What is the surface area of the triangular prism A- 224ft

B-192ft

C- 144ft

D-288ft

Step-by-step explanation:

First I know that both triangles have an area of 24. And judging from the rectangles the height is 10 correct? If so then it would be 24+24+60+60+36. The rectangles area is 60 and the square area is 36. You then add them all together and get 224. So the answer is A.

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

99

step-by-step explanation: