Slot method
8 optionns n 1st slot
7 options in 2nd slot (since 1 is at 1st slot)
6 options in 3rd slot
5 options in 4th slot
8*7*6*5=1680 ways
The area is 126in^2
Hope this helps
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Answer:A=1/2xbh
1/2 x10x5=25 square inches
Step-by-step explanation:
