By definition of absolute value, if 
, then 
, so
On the other hand, if 
, then 
, and
The radius of the circle is the square root of (123/pi) = 6.257 feet to 3 decimal places.
A triangle's angle measures add up to 180°.
67 + 90 = 157
180 - 157 = 23
The last angle measure is 23°.
The longer the side length, the larger the angle opposite it is. And vice versa. The shorter the side length, the smaller the angle opposite it is.
Side Length: ∠ Measure Opposite Side:
5 in 23°
12 in 67°
13 in 90°
The answer is 28 squared centimeters
