Which of the following two-dimensional shapes can be rotated to create a cone?

Right triangle
Square
Circle
Ellipse

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next