1.1. Calculate the median mark for Grade 11B.

13. Maggie is creating a cushion for a circular stool. The stool has a diameter of finches. If she needs fabric to extend' 2 inches all the way around the cushion, how much fabric will she need?

\( \left. \begin{array} { l } { 3107 } \\ { 267 } \\ { 147 } \end{array} \right. \)

Find the quotient. \[ \frac{-27}{-9} \]

For the following function \( \frac{\mathrm{us}}{\mathrm{dt}} \), find the antiderivative \( s \) that satisfies the given condition. \[ \frac{\mathrm{ds}}{\mathrm{dt}}=2 \sin 2 \mathrm{t}-16 \cos 16 \mathrm{t} ; \mathrm{s}\left(\frac{\pi}{4}\right)=6 \] The antiderivative that satisfies the given condition is \( s(t)=\square \).

1) a) How many millimetres are in a centimetre? b) How many centimetres are in a metre? c) How many metres are in a kilometre? d) Work out how many millimetres are in a metre.