Volume = Area of a triangle base x height (..or length) Volume = 2,400cm^3 Volume = 1/2(16)(h)(20) 2,400cm^3=1/2(16)(h)(20) 2/400cm^3/160 = 160(h)/160 Part A= 15cm^3=height of the box
PART B
Surface Area = 1/2(15*16)(2)+20(17)(2)+16(20) Surface Area = 240+680+320 Surface Area = 1,240 Part B = You will need approximately 1,240cm of cardboard.