← AreasGeometry Areas 039 — A strip of cardboardAreasPracticeMed-EasyYour answera)mmcmdmmkmb)mmcmdmmkmEnter the number. You can pick another unit from the list.Check answerReveal solutionStuck? Show me one stepRelated exercisesHarderZAP 2006, Exercise 5 — Perimeter of rectangular remainder after cutting squaresZAP 2010, Exercise 5 — Rectangle with shaded sub-rectangle equalling 1/3 of perimeterZAP 2013, Exercise 4 — Triangle, square, rectangle (same perimeter, 21.6 cm)