Posted by amit on Wednesday, December 12, 2012 at 1:22pm.
ABCD is a parallelogram in which BC is produced to E suh that CE=BC.AE intersects CD at F.if ar(DFB)=3cm^2.
find the area of the parallelogram ABCD.

maths plse help me..  Steve, Wednesday, December 12, 2012 at 2:34pm
by similar triangles,
FC/AB = CE/BE = 1/2
so, F is the midpoint of CD
if the altitude of ABCD from AB to CD is h,
area(ABCD) = h*CD
area(DFB) = 1/2 * h * DF = 1/2 * h * CD/2 = 1/4 h*CD
so, area(ABCD) = 12

maths plse help me..  Lily, Monday, October 17, 2016 at 6:34pm
You would try to find X first
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