Library / UKMT Grey Kangaroo /144 of 242

UKMT Grey Kangaroo, 2016

Geometry Difficulty 2.0 Junior Find the answer United Kingdom

What is the total area in $\text{cm}^2$ of the shaded region?

(A) $50$ (B) $80$ (C) $100$ (D) $120$ (E) $150$

Figure for this problem

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.