Triangle ABC is a right triangle. The length of one of the legs is 12 centimeters, and the length of the hypotenuse is 20 centim
eters. What is the length of the other leg?
2 answers:
Answer:
The other leg is <u>16 cm long</u>.
Explanation:
Use the Pythagorean theorem:
,
where:
is the hypotenuse, and
and
are the other two sides (legs).
Let

Rearrange the equation to isolate
. Plug in the values for
and
, and solve.


Simplify.


Take the square root of both sides.

Simplify.

Answer: 16 centimeters
Step-by-step explanation:
We will use the Pythagorean theorem to solve. The <em>c</em> variable is the hypotenuse, the <em>a</em> and <em>b</em> variables are the legs.
a² + b² = c²
12² + b² = 20²
144 + b² = 400
b² = 256
b = 
b = 16
The length of the other leg is 16 centimeters.
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