The area of the trapezium is 475 cm square and its height is 19 cm find the length of its parallel sides if one side is 40cm greater than the other side
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let the length of parallel sides be x and y
area of trapezium =1/2(sum of parallel sides)×height
475=1/2(x+y)×19
475×2=(x+y)×19
950/19=(x+y)
50=x+y
50=40+y
y=50-40
y=10
other parallel side is 10cm
area of trapezium =1/2(sum of parallel sides)×height
475=1/2(x+y)×19
475×2=(x+y)×19
950/19=(x+y)
50=x+y
50=40+y
y=50-40
y=10
other parallel side is 10cm
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