3 years ago

What is the area of a square with sides of 3.5 ft

Mathematics

2 answers:

Arisa [49]3 years ago

6 0

The answer is 14 feet

eduard3 years ago

3 0

A=LW. 3.5*3.5=12.25 sq ft

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Part 1:

Yes, the side lengths form a right triangle.

Part 2:

Option d 37.1 cm

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We need to use the pythagorean theorem.

In part 1, if the 3 side lengths are a right triangle, then, they must verify:

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By the theorem. Then:

$\begin{gathered} 7.5^2=56.25 \\ 4.5^2+6^2=20.25+36=56.25 \end{gathered}$

They're equal, then the lengths correspond to a right triangle.

For part 2, we need to use again the theorem. In this case:

$\begin{gathered} 12^2+x^2=39^2 \\ x=\sqrt{1521-144} \\ x=\sqrt{1377} \\ x\approx37.1cm \end{gathered}$

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