Answer:
C. 60
Step-by-step explanation:
First we mjust know that area is length times width (this will be the key to help you)
To find the old area we must: 5*8=40
Then we must find the new area: 10*10 = 100
Now we must subtract the tiles to get the new from old: 100-40=60
Therefore, your answer is 60.
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