The correct answer is A.) Obtuse.
When an angle is over 90° it is considered an obtuse angle. Any angle that measures under 90 is an acute angle.
a simple way to do away with denominators, is we can simply multiply both sides by the LCD, in this case the LCD is 3, so let's multiply both sides by 3.

Answer:
523.333333333
Step-by-step explanation:
Using the formula 4/3πr³:
(4/3)(3.14)(5^3)
Hope this helps :)