The square base of a pyramid of side 3cm has height 8cm. If the pyramid...

JAMB 1982

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)

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Correct Answer: Option B

Explanation

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

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The square base of a pyramid of side 3cm has height 8cm. If the pyramid...

Correct Answer: Option B

Explanation

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