Answer:
150cm
Step-by-step explanation:
depth is 5 cm, so the area of one of the faces is 25 cm. theres 6 faces so 25*6= 150
B. 8 x 10^3
1.6 x 10^5 / 0.2 x 10^2
= 160 000 / 20
= 8 000
You can write this as 8 x 10^3