Mathematics for IGCSE & O level - Mensuration (Section 12 - No. 8)
Find the volume of the remaining area after a cone of height 3cm is removed from a cone of height 12cm and base radius 4cm.
191.9 cm³
200 cm³
201 cm³
201.1 cm³
Explicació
Big cone volume = 1/3 * pi * 4² * 12 = 201cm³; Small cone radius = 1cm, small cone volume = 1/3 * pi * 1² * 3 = 3.14cm³. Volume remaining = 201- 94.2= 191.9 cm³