On the gird below join 3 of the rectangles together without overlapping to form one figure that has an area of 22square units use the rectangles shown in tge digram on page × is she right ?

The image shown has an area of 22 square units; but I'm not sure if there is more to this question (ie: I can't see what rectangles are being referenced in the diagram - are those the correct rectangles in the drawing?).

The answer is all about the number 4