The base of a cone is something circular, like a circle or an ellipse.
The rest of the options (square, triangle, and pentagon) are all based of pyramids, not cones. Cones have to have a circular base because otherwise they'd be pyramids.
Answer:
The first quadrant
Step-by-step explanation:
Aka upper right quadrant
Answer:
1668.75
Step-by-step explanation:
I think it's equal to 1 because every expression with the exponent of zero is equal to 1, idk for sure though