Answer:
1. 150 cm
2. 15 m
3. 94 cm
Step-by-step explanation:
1. surface area formula of a cube is 6a²
2. surface area formula of a triangle is ([tex]\frac{1}{2}[/tex])bh
3. surface area formula of a box is 2(l*w)+2(l*h)+2(w*h)
