12 out of 15 people in the us like to eat out. if 400 people selected eating out how many people took the survey?

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

(10. in the figure, a aabc is drawn tocircumscribe a circle of radius 3 cm ,such thatthe segments bd and dc are respectively oflength 6 cm and 9 cm. find the length ofsides ab and ac.

Me i'm timed right now! there's 4 answer