Geometry - January 2009

21 In the diagram below, a right circular cone has a diameter of 8 inches and a height of 12 inches.

What is the volume of the cone to the nearest cubic inch?

(1) 201 (3) 603

(2) 481 (4) 804

23 Given the system of equations:

y = x^{2} - 4x

x = 4

The number of points of intersection is

(1) 1 (3) 3

(2) 2 (4) 0

25 Which illustration shows the correct construction of an angle bisector?

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