ABCD is a parallelogram and EFCD is a rectangle. AL ⊥ DC, then ar(ABCD) is equal to
ar(∆ADL)
ar(∆FBC)
ar(EALD)
ar(EFCD)
A rectangle is also a parallelogram, ABCD and EFCD are on the same base CD and between the same parallels CD and BE
Therefore, ar(ABCD) = ar(EFCD)
ABCD and ABFE are parallelograms as shown in the figure. If ar (ABCD) = 36 cm2 and ar(ABFE) = 18 cm2, then ar (EFCD) [in cm2] is