Volume of clay = 18.144 mm³ (option A)
Step-by-step explanation:
Volume of clay = Volume of a rectangle based pyramid
Volume of a square based pyramid = area × height/3
length = 6.3mm
width = 2.4mm
Area = length × width = 6.3mm × 2.4 mm
Area of base = 15.12 mm²
height = 3.6 mm
Volume of the rectangular based pyramid = 15.12 × 3.6/3
Volume of the rectangular based pyramid = 18.144 mm³
Volume of clay = 18.144 mm³ (option A)