HKDSE-MATH - 2011SP - Paper 2 -

Ans: (a) $11\text{ cm}$ (b) $624\text{ cm}^2$

1. Consider the

Ans: (a) $73\ 728\pi\text{ cm}^3$ (b) (i) $144\ 000\pi\tex

Ans: A
In $\Delta ADC$,

$\begin{array}{rcl}
AC & = �

Ans: B
Let $\angle AOB=\theta$.

Consider the sector $OAB$,

Ans: B
Join $AF$.

Since $\Delta DFG$ and $\Delta DFA$ have th

Ans: (a) (i) $r:R=1:3$ (ii) $15\text{ cm}$ (b) No

1. 1. Since the b

Ans: B
Join $BC$ and $OC$, where $O$ is the centre of the semic

Ans: B
The slant height of the right circular cone

$\begin{a

Ans: C
Join $AE$.

Since $AD:BC=2:3$ and $E$ is the mid-point

Ans: (a) $2\ 625\pi \text{ cm}^2$ (b) Yes

1. Note that $\Delta V

Ans: C
Since $BC=CD=DE$ and $\angle BCD = 90^\circ$, then $B

Ans: D

$BD$ is produced and intersects $EC$ at $F$. Note that