23.
28.
[Probability]
*
[Area]
*
Find the area of the annulus shaded below.
If a girl from the class is chosen at random,
what is the probability that she plays piano?
(Use 1t z 3.14)
Girls in lOA
9.42 m2
5
12
24.
29. [Volume]
*
A rectangular fish tank 120 cm long and 50 cm
wide is filled with 240 liters of water. What is
the average depth of the water in the fish tank?
[Hint: 1 L = 1000 cm3J
[Geometry]
Circle the two congruent triangles and give
your reason: SSS, SAS, ASA or HL
~
40 em
30.
[Surtace Area]
31.
[Pythagorean
4
*
The side length of a cube is tripled. By what
factor will the surface area increase?
Theorem I Trigonometry]
*
For which angle is the tangent ratio 2.4?
25.
[Angles]*
Find the value of xc.
12
32.
[Problem Solving 1] *
Fill in the numbers 1 to 7 so that the sum of the
numbers along each straight line is 15.
26.
[Measurement
/Time]
Change 2500 mL into liters.
2.5 L
27.
[Perimeter]
*
Find the perimeter of the shape below.
1km
33.
[Problem
Solving
2]
*
Two women and two children wish to cross a
river in a canoe that will hold only one woman
or both children. They can all row on their
own, but no one can swim. If a one way trip in
the canoe takes 10 minutes, what is the
minimum time in which all four
people can cross the river?
90min
White 3.6@ Copynght. Not to be reproduced without permission. J. B. Wright - Echuca 2004
page 46