A) 75 m
B) 45 m
C) 120 m
D) 60 m
Correct Answer: A
Solution :
Let the parallel sides be 5x and 3x m. Area of trapezium \[=\frac{1}{2}\] (sum of parallel sides) \[\times \]distance between them \[\Rightarrow \] \[1440=\frac{1}{2}(5x+3x)\times 24\] \[\Rightarrow \] \[12\times 8x=1440\] \[\Rightarrow \] \[x=\frac{1440}{12\times 8}=15\] \[\therefore \] The longer parallel side \[=5x\times 5\times 15=75\,\,m\]You need to login to perform this action.
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