A) 20 cm
B) 24 cm
C) 30 cm
D) 36 cm
Correct Answer: B
Solution :
[b] Let the sides of trapezium be \[5x\]and \[3x,\]respectively. According to the question, \[\frac{1}{2}\times (5x+3x)\times 12=384\] \[\Rightarrow \] \[8x=\frac{384\times 2}{12}\] \[\Rightarrow \] \[x=\frac{64}{8}=8\,cm\] \[\therefore \]Length of smaller of the parallel sides \[=8\times 3=24\text{ }cm\] |
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