Which of the following have at least two congruent parallel bases?
check all that apply.
a. cube
b. cone
c. circle
d. cylinder
e. pyramid f. none of these

A. Cube.

D. Cylinder

Step-by-step explanation:

We have been names of some geometric figures. We are asked to choose the figure, which have at least two congruent parallel bases.

A. Cube.

We know that a cube is a parallelogram, which has two pairs of congruent parallel sides. The top and bottom of a cube are square and parallel, therefore, option A is the correct choice.

B. Cone.

We know that cone has one only one circular base, therefore, option B is incorrect.

C. Circle.

We know that a circle has no parallel sides, therefore, option C is not a correct choice.

D. Cylinder.

We know that a cylinder has two congruent circular bases parallel to each other, therefore, option D is the correct choice as well.

E. Pyramid.

We know that pyramid is a three dimensional figure having only one base, therefore, option E is not a correct choice.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6