Answer:
<h2>20 cm.</h2>
Step-by-step explanation:
We know that the permiter is defined as

Where
is the longest side,
is the smallest and
is the middle side.
If
then,
, where we need to find an expression for
using the law of cosines.

Replacing all expression, the perimeter is

Using a calculator, the perimeter is 20 units centimeters.
Answer:
Step-by-step explanation:

The third answer
1 quarter, 6 dimes, 1 nickel, 7 pennies
Answer:
500
Step-by-step explanation:
hope it helps you
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