Answer:
r = 30°
Step-by-step explanation:
According to the Exterior Angle Sum Theorem, the exterior angle, which is 90°, is equal to the 2 interior angles, which are 60° and <em>r°</em>. We know that the angle next to the exterior angle is 90°, and since all angle sums add up to 180°, <em>r</em> = 30°.
Answer:
Step-by-step explanation:
r = 9 cm
h = 10 cm
Volume of cone = (1/3)πr²h
= 847.8 cubic cm
The answer would x=-1 for this question