Demi is working on a presentation about a famous mathematician for her math class. She decides to make her poster in the shape of a plus sign.
What is the total area of Demi's poster?
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Answer:
1360
Step-by-step explanation:
We could find the sum of the two rectangles, then sub the square.
12+20+12 is 44, 20*44 is 880
Because there are two rectangles, 2*880 = 1760.
20*20 is 400, 1760-400 is 1360.
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