Oh, dude, let's break it down. If Steve cut an 8-foot board into three equal pieces, each piece would be 8 divided by 3, which is approximately 2.67 feet long. So, like, each piece would be around 2 feet and 8 inches long. Math can be fun, right?
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28=A+B+c b=2A c=4A subst. a=4 b=8 c=16
19.6 / 4 = 4.9 inches per piece.
9 inches
Each piece of string is :1/7 x 20 = 2 6/7 or 2.857 inches (3dp)
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