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42.The area of a trapezium is 105 cm?and its height is 7 cm. If one of theparallel sides is longer than the otherby 6 cm, then the length of the longerside, in cm, is(1) 18(2) 16(3) 15(4) 12 |
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Answer» option 3 ) is the correct answer You need to remember this concept to solve the question:Area of trapezium = 1/2 X (Sum of Parallel sides) X Distance between them. Usingarea of trapezium= 1/2 × sum of parallelsides × heightgiven area of trap.= 105cmand height=7cmone side is loger 6 cm than otherlet the one side be xthen other be 6+xthen use formula 105=1/2(x+6+x)×7210/7=2x+630-6=2x24=2xx=12so first side is 12and other 12+6=18 cm 18 cm is the correct answer option 2 is the correct answer 18 is the correct answer 4) is the correct answer 18 is the correct answer the answer coùld be option 1 |
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