Jonathan takes a piece of plywood that is 16 cm long and uses a table
saw to make a 20 cm cut from a corner to its opposite corner. What was
the breadth of the plywood?
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Answer:
Let a be the width of the plywood.
Using the Pythagorean theorem, with b = 12 and h = 20.
p2 + b2 = h2
a2 + 122 = 202
a2 + 144 = 400 (subtract 144 from both sides)
a2 = 256
a2 = 162
a = 16
The width of a piece of plywood is 16 cm.
Step-by-step explanation:
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