area of trapezium is 286sq cm and height is 13 cm.find the sum of lengths of its parallel sides?if one side is of 20 cm then find length of another side
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Area=1/2×sum of parallel side ×height
286=1/2×sum of parallel side×13
286×2÷13=sum of parallel side
44=sum of parallel side
One side 20
So,
other side =44-20=24cm
286=1/2×sum of parallel side×13
286×2÷13=sum of parallel side
44=sum of parallel side
One side 20
So,
other side =44-20=24cm
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