(a)[4]
Determine the perimeter of the shaded region $BCD$, with your answer correct to 1 decimal place.
(b)[2]
Determine the area of the shaded region $BCD$, with your answer correct to 1 decimal place.
Mathematics 9709 · AS & A Level · Circular measure
Circular measure — practice question
A sector $ABD$ of a circle is shown, with centre $A$ and radius $10\text{ cm}$. The perpendicular bisector of $AB$ passes through $D$.
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Either correct $\angle CAD=\frac{\pi}{3}$ or correct $CD=5\sqrt3$” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI