SAT Subject Test Mathematics Level 2

area    of  rectangle   ABCD?

(A) 12.50

(B) 17.50

(C) 22.75

(D) 26.50

(E) 30.75

47 . If x ≥ 0 and arcsin x = arccos (2x), then x =

(A) 0.866

(B) 0.707

(C) 0.500

(D) 0.447

(E) 0.245

48 . If and f(g(x)) = g(f(x)), which of the following can be g(x)?

I.

II. 2 x +   8

III.

(A) I   only

(B) II  only

(C) III only

(D) II  and III only

(E) I,  II, and III

49 . If a right circular cylinder of height 10 is inscribed in a sphere of radius 6, what is the
volume of the cylinder?