Answer:
P=80 feet, A=360 square feet
Step-by-step explanation:
180 is the least common multiple of 12 and 45 or 90:
12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, <u>180</u>, 192, ...
45, 90, 135, <u>180</u>, 225, ...
90, <u>180</u>, 270, ...
Answer:
The second one is an right triangle.
Step-by-step explanation:
It's the only one that's a right triangle.