Part A) L = length = 8 mm W = width = 6 mm H = height = 4 mm TSA = 2*(L*W + W*H + L*H) TSA = 2*(8*6 + 6*4 + 8*4) TSA = 208 The units are "square millimeters" often written as sq mm or "mm^2"
Answer: 208 -------------------------------- Part B) From part A, the total surface area (TSA) was 208 square mm. If it costs $3 per square mm, then that means the total cost C is C = (cost per sq mm)*(total surface area) C = 3*208 C = 624 The units for the cost are in dollars. This result is assuming that there isn't any waste.
Answer: 624 -------------------------------- Part C) Volume = Length*Width*Height V = L*W*H V = 8*6*4 V = 192 The units are in cubic millimeters. The notation is sometimes "cubic mm" or "mm^3"
