Question 1970 – 1 Pure Mathematics - AQA Maths Questions

An artist is designing a corporate logo. The design consists of a sector $D O C$ of a circle with centre $O$ and radius $O D$ . This is joined to a major sector $A O B E A$ of a smaller circle, also with centre $O$ and radius $O A$ . The points $A$ and $B$ lie on the line segments $O D$ and $O C$ respectively, such that $O$ , $A$ , $D$ and $O$ , $B$ , $C$ are collinear.

Given that:

angle $A O B = 0.82$ radians
arc length $20.5\text{ cm}$
the ratio of lengths $D A : A O = 7 : 3$

1 Pure Mathematics

Question 1646

1 Pure Mathematics Questions