Ok let's do this.
First we will cut of the triangle that is marked with red dotted line and pop it on the other side. Then you get a rectangle!! All you have to do now is multiply 21.5*20=410. HAPPY TO HELP!
Answer:
430
Step-by-step explanation:
Area = (base)(height)
A = (20)(21.5)
(20)(21.5) = 430
A = 430
