Its Infinitely many solutions then the answer is A
12 (don't take my answer because it's been awhile since I've fine a question like that but I'm pretty sure it's 12)
Answer:
A 3 x 4 x 8 inch triangle
Step-by-step explanation:
duh
.300 + .060 + .008
You would break each number's place value down and add them in a line, in decimals, you would do the exact same.