Question

Find the surface area of this figure. Give an accurate answer

Answer 1

Answer:

311 mm^2

Step-by-step explanation:

for bases: 1/2(7*5) * 2= 35

for sides: 9 * 12 =108 * 2= 216

bottom sides: 12*5= 60

216+60+35 = 311 mm^2