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Question

The base of a prism is in the form of an equilateral triangle of perimeter 12 cm. The height of the prism is 8 cm. What is the volume of of the prism?


A

323cm3

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B

162cm3

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C

322cm3

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D

163cm3

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Solution

The correct option is A

323cm3


Perimeter of the equilateral triangle is 12 cm

Hence each side of the equilateral triangle is 123=4cm

Area of the triangular base = 34×(4)2=34×4×4

=43cm

Volume of prism = Base Area×Height

=43×8

=323cm3


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