Answer:
Your answer would be the first option.
A right angle is 90 degrees
An obtuse angle is more than 90 degrees and that angle is more that 90 degrees
Answer:
3 hours
Step-by-step explanation:
Angles 6 and 7, because they are alternate along the transversal.
Also angles 1 and 4.
9,660/0.5m3=19.320kg/m^3
Get it from this equation m=pV
p is density ,V volume, m mass
Hope it helps ;)