Answer:
1 999 000
Step-by-step explanation:
Formula:

………………………………………
Then




Answer:
3.8 in decimal form, or 3 4/5
Step-by-step explanation:
I just used a calculator, sorry :(
anyways, hope this helped! :)
Answer:
12.
Step-by-step explanation:
A obtuse isosceles b obtuse scalene c acute isosceles