No estoy segura pero 2.5 (half of the box that is 5cm)
Answer:
10.38 in
Step-by-step explanation:
Long side would be opposite to 60°.
Since, side opposite to 60° is root 3 upon 2 times of hypotenuse.

X^2 + 3x = 24
completing the square
(x + 1.5)^2 - 2.25 = 24
(x + 1.5)^2 = 26.25
x + 1.5 = +/- sqrt26.25 = +- 5.123
x = -1.5 + 5.123 = 3.62 to nearest hundredth and
x = -1.5 - 5.123 = -6.62 to nearest hundredth
solution set is {-6.62, 3.62}
Here's the solution,
The given triangle is a <em><u>Right</u></em><em><u> </u></em><em><u>angled</u></em><em><u> </u></em><em><u>triangle</u></em><em><u>,</u></em>
So, by applying <em><u>Pythagoras</u></em><em><u> </u></em><em><u>theorem</u></em><em><u>:</u></em>
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value of c = 5 miles