SAT Subject Test Mathematics Level 2

39 .

Figure  9

In  Figure  9,  C   is  the center  of  the semicircle, and the area    of  the semicircle  is  8π. What    is

the area    of  triangle    ABC in  terms   of  θ?

(A) 2   sin θ   tan θ

(B) 4   sin θ

(C) 8   cos θ

(D) 8   sin θ

(E) 8   sin θ   tan θ

40 . Exactly 70 percent of the people in each of 3 rooms are seniors at university X. If one
person is selected at random from each of the 3 rooms, what is the probability that each
of the 3 people selected is a senior at university X?

(A) 0.2401

(B) 0.343

(C) 0.49

(D) 0.64

(E) 0.7

41 . What is the value of x if 4.18x = 36.54?