8
35.
If x varies directly as
.
n and x = 9 when n =
9, find x when n =
9
17
A.
.
3
B. 4 C.
.
17
D. 27
36.
Q
R
P
The triangle
PQR
above is
A. an isosceles triangle
B. an obtuse
-
angled triangle
C.
a scalene triangle
D.
an equilateral triangle
37.
The sum of the interior angles of a polygon
is 20 right angles. How many sides does the
polygon have.
A. 40
B. 20 C. 10 D. 12
38.
The locus of a point P which is equidistant
from two given points S and T is
A.
the angle bisector of
PS
and
ST
B.
a perpendicular to
ST
C.
the perpendicular bisector of
ST
D.
a line parallel to
ST
39.
R
r
o
In the diagram above are two concentric
circles of radii
r
and R respectively with
centre
O
. If r =
R
5
2
, express the area of the
shaded portion in terms of
.
and R.
A.
2
9
5
R
.
B.
2
25
21
R
.
C.
2
23
21
R
.
D.
2
25
9
R
.
40.
In the diagram above, a cylinder is surmounted
by a hemispherical bowl. Calculate the
volume of the solid.
A. 198
.
cm
3
B. 180
.
cm
3
C. 162
.
cm
3
D. 216
.
cm
3
.
41.
Y
W
O
Z
X
In the diagram above,
XZ
is the diameter
of the circle
XYZW
, with the centre
O
and
radius
2
15
cm.
If /
XY/
= 12cm, find the area of the triangle
XYZ
.
A. 45 cm
2
B. 27 cm
2
C. 75 cm
2
D. 54 cm
2
42.
Find the coordinate of the midpoint of x
and y intercepts of the line 2y = 4x
–
8.
A. (1,
-
2)
B. (2, 0)
C. (
-
1,
-
2)
D. (1, 2)
43.
A bucket is 12cm in diameter at the top,
8cm in diameter at the bottom and 4cm
deep. Calculate its volume.
A.
3
128
.
cm
3
B.
72
.
cm
3
C.
3
304
.
cm
3
D.
144
.
cm
3
.
44.
A hunter 1.6m tall, views a bird on top of a
tree at an angle of 45
0
. If the distance
between the hunter and the tree is 10.4m,
find the height of the tree.
A. 12.0m
B. 10.4m
C. 9.0m
D. 8.8m
45.
A chor
d of a circle subtends an angle of
120
0
at the centre of a circle of diameter