Maths Olympiad Prep

Library / UKMT Junior Mathematical Challenge /126 of 274

UKMT Junior Mathematical Challenge, 2018

Geometry Difficulty 1.0 Junior Find the answer United Kingdom

The diagram shows a shape made from four 3 cm×3 cm×3 cm3\text{ cm} \times 3\text{ cm} \times 3\text{ cm} wooden cubes joined by their edges. What, in cm2\text{cm}^2, is the surface area of the shape?

(A) 162162 (B) 180180 (C) 198198 (D) 216216 (E) 234234

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.