Can someone me answer number 70 and 71 in the image because i am very lost

70). Answer Letter Choice, (C), 18 pi square units.

Area = pi r^2

D = 12

R = 6

Larger Circle: 36 pi

Find smaller circles, Subtract:

Diameter of larger circle is 12

Radius 6, also diameter of small circles (2)

pi r^2

D = 6

R = 3

pi = 9

2 circles

2 * 9 pi = Letter Choice, (C), 18 pi square inches

71). Answer Letter Choice, (B), 30.79 cm^2

72). 144

Hope that helps : )

it would be:

c.parallelogram.

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.