8. A cardboard box measures 40 cm by 40 cm by 30 cm. Calculate the length of the space 30 cm diagonal, to the nearest centimetre. space diagonal 40 cm 40 cm 9 . Sand is being poured from one container to -5 cm another, as shown below. The sand flows from the shaded part to the unshaded cone. 4 cm 2 cm The shaded part starts full of sand. The sand empties into the unshaded cone and fills it up to the top. What is the height of the unshaded. cone, to one decimal place? 6 cm