Answer:
96cm
Step-by-step explanation:
front/back triangles: (4 * 3) / 2 = 6cm
bottom rectangle: 4 * 7 = 28cm
side rectangle (left): 3 * 7 = 21cm
slanted rectangle: pythagoras - 3^2 + 4^2 = x^2
9 + 16 = x^2
25 = x^2
square root of 25 = 5
x = 5
7 * 5 = 35cm
6 * 2 + 28 + 21 + 35 = 96cm
