2010 · Q65
A rectangular area of 6 square metres is to be painted on a 3 m x 4 m board leaving a border of uniform width on all sides. What should be the width of the border?
Elementary MathematicsMensuration
- A0.25 m
- B0.5 m
- C1 m
- D3 m
Explanation
(3-2w)(4-2w)=6 gives w=0.5 m.