Difference of 2 parallel sides ofa trapezium is 4cm. perpendicular distance between them is 10cm. If the area of the trapezium is 250cm^2. Find the lengths of the parallel side?  Choose the correct answer:  A) 20,25  B) 21,25  C) 27,23  D) 28,25  E) 30,25
Let the two parallel sides of the trapezium be a cm and b cm.   Then, a-b = 4 ------ (1)   And, (1/2) x (a+b) x 10 = 475 =&gt;(a+b) =((250 x 2)/10) =&gt; a + b = 50------- (2)   Solving 1 and 2, we get: a=27,b=23   So, the two parallel sides are 27 cm and 23 cm.   27,23
<result>C</result>
Difference of 2 parallel sides ofa trapezium is 4cm. perpendicular distance between them is 10cm. If the area of the trapezium is 250cm^2. Find the lengths of the parallel side?