9514 1404 393
Answer:
43.70 ft
Step-by-step explanation:
The Pythagorean theorem tells you the square of the hypotenuse is the sum of the squares of the other two sides. The correct computation is ...
Hypotenuse is √(7² +7²) = √(49 +49) = √98 = 7√2
Perimeter of pentagon is ...
7 +7√2 +7√2 +7√2 +7 =
7 +21√2 +7 =
14 +21√2 ≈ 14 +29.70 =
Perimeter is approximately 43.70 ft.
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There are two errors:
- side lengths were used instead of their squares to find the hypotenuse
- contents of radicals were added, rather than coefficients of them
Both errors are easy to find if you know what the computation is supposed to look like.
The Pythagorean theorem involves a sum of squares.
