The square base of a pyramid of side 3cm has height 8cm. If the pyramid is cut into two parts by a plane parallel to the base midway between the base and the vertex, the volumes of the two sections are
A
(21cm3, 3cm3)
B
(24cm3, 3cm3)
C
(24cm3, 21cm3)
D
(72cm3, 9cm3)
E
(63cm3, 9cm3)
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Vol. of the 1st section is side x height
vol. = 3 x 8
= 24cm3
vol. of the second section is 3 x 1 = 3
= 24cm3, 3cm3
Source: Myschool Past Questions Archive (Record #32538)