You 2l x 2w and blah blah blah blah blah blah blah blah
Associative property of mulipication, the ability to move parenthasees with mltipication or additon
18m^2
area of a trapezoid = (a+b)/2 * h, where a and b are bases 1 and 2, and h is height
(4+8)/2 * 3
= 12/2 * 3
= 6 * 3
= 18