(AMC8, 2000) The area of rectangle ABCD is 72. If point A and the midpoints of BC and CD are joined to form triangle, the area of that triangle is: A: 21, B: 27, C: 30, D: 36, E: 40

Its a multiple choice question

B: 27

Step-by-step explanation:

See the attached diagram.

Here, area of Δ AEF = area of ABCD - area of Δ ABE - area of Δ ADF - area of Δ ECF

⇒ area of Δ AEF =

=

=

= {Since the area of the rectangle WL is given to be 72}

= 27 (Answer)

c

step-by-step explanation:

answer: b

step-by-step explanation: