HKCEE - 2009 - Paper 2 -

Ans: B
The length of a side of the base square

$\begin{array}

Ans: B
Let $h\text{ cm}$ be the height of the circular cone. S

Ans: A
Let

$\begin{array}{c|c|c|c}
& \text{sphere }

Ans: C
$\begin{array}{rcl}
\pi r^2 \times \dfrac{120^\ci

Ans: B
Consider $\Delta ACD$,

$\begin{array}{rcl}
\cos 60

Ans: (a) $120\text{ cm}^2$ (b) $2\ 400\text{ cm}^3$ (c) (i)

Ans: C
Let $V_0$ and $V_1$ be the volume of the cylinder of rad

Ans: C
The base area

$\begin{array}{cl}
= & 8\times 5 +

Ans: A
Denote $O$ the centre of the semi-circle and join $OD$

Ans: C
Let $AM = x\text{ cm}$. Consider $\Delta ABC$, we have

Ans: (a) $60\text{ mm}$ (b) $36\text{ mm}$ (c) Yes

1. Let $OX= R

Ans: B
Let $\ell_0$ and $b_0$ be the original value of the len

Ans: C
Let $\theta$ be the angle at centre of the sector. Then

Ans: C

Let $x\text{ cm}$ be the length of the hypotenuse of th

Ans: B
$\begin{array}{rcl}
\dfrac{1}{2} \times \dfrac{4

Ans: D
Since $ABCD$ is a parallelogram, then $AB=CD$.

It is g