Help perimeter of compound shape with hole PLEASE

Lollypop

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Nov 11, 2011
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Please help me... If I had a rectangle (8x9) with a smaller rectangle inside it (5x2 cm) making a hole in the middleis the perimeter just 8+8+9+9 or is it the inside edge too so, 8+8+9+8+5+5+2+2

Thanks
Lollypop
 
Please help me... If I had a rectangle (8x9) with a smaller rectangle inside it (5x2 cm) making a hole in the middleis the perimeter just 8+8+9+9 or is it the inside edge too so, 8+8+9+8+5+5+2+2

Thanks
Lollypop

Figure out the perimeter of both rectangles and then subtract the smaller one from the larger on.
 
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