Answer:
√147 is your answer.
Step-by-step explanation:
Use the following formula: c² - b² = a²
In the formula, c = the hypotenuse (14), b = a side (7), a = the last side (x).
Set the equation: (14)² - (7)² = a²
Simplify: (14 * 14) - (7 * 7) = a²
Simplify: (196) - (49) = a²
Simplify: 147 = a²
Isolate the variable, <em>a.</em> Note the equal sign, what you do to one side, you do to the other. Root both sides.
147 = a² ⇒ √147 = √a² ⇒ √147 = a
a = x = √147
√147 is your answer.
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