The base of a right prism is a trapezium whose lengths of two parallels sides are 10 cm and 6 cm and distance between them is 5 cm. If the heights of the prism is 8 cm, its volume is :
Options:
A . 320 cm3
B . 300 cm3
C . 310 cm3
D . 300.5 cm3
Answer: Option A Length of parallel sides of prism = 10 cm and 6 cm Height of prism = 8 cm ∴ Volume of prism : $$\eqalign{ & = \frac{1}{2}\left( {10 + 6} \right) \times 5 \times 8 \cr & = \frac{1}{2} \times 16 \times 5 \times 8 \cr & = 320{\text{ c}}{{\text{m}}^3} \cr} $$
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