Help me!! http://imgur.com/Q7MK5WT

Question

mathmate · Answer

The idea of solving these problems is to 
1. split into two or more regular figures.  All of the examples can be split up into two rectangles.  Area of a rectangle is width * height.
2. From the given dimensions, find the missing side lengths (in order to calculate the area of individual figures/rectangles).
3. Calculate the area of individual figures
4. Sum the area of individual figures, and that's the answer.
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mathmate · Answer

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As shown in the figure, find the missing sides of the small and large rectangles.
The area of the given figure is therefore 12+30=42 $in^2$
Important: do not forget the units of area.