1. The length of two parallel sides of a trapezium are 30 cm and 40 cm. If the area of the trapezium is 350 cm2, then what is the value (in cm) of its height?
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By: anil on 05 May 2019 02.23 am
Sum of two parallel sides of a trapezium = $$30+40=70$$ cm Let height = $$h$$ cm => Area of trapezium = $$frac{1}{2} imes h imes$$ (sum of parallel sides) => $$frac{1}{2} imes(h) imes(70)=350$$ => $$frac{h}{2}=frac{350}{70}=5$$ => $$h=5 imes2=10$$ cm => Ans - (B)
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