Please could you answer my question
CDEF is a trapezium
ABCF is a rectangle and perimeter is20cm
BD=9cm
AB=6cm
EF=3cm
What is the area of CDEF
Sure, you have to ask the question first though
tell us da answer
nope
Of course! I'm here to help. What is your question?
Okay so we know the perimeter is 20cm, that means using the rectangle formula for perimeter
Perimeter =2(Length +Width)
Substitute the numbers we have
20cm=2(6cm+Width)
20cm=12cm+2Width
4=Width (after rearranging it)
So we have found the answer for BC which is 4cm which makes CD 5 cm
At this point you use the Trapezium area formula