n Learning and Teaching Mathematics - A4 rectangles and trigonometry

Volume 2013, Issue 15
  • ISSN : 1990-6811


We are all familiar with standard A4 and A3 sheets of paper. Most of us are also probably aware that an A3 sheet can be cut in half to form two A4 sheets. A standard A4 sheet of paper measures 210 mm by 297 mm while a standard A3 sheet of paper measures 297 mm by 420 mm. From these dimensions we can see that A4 and A3 sheets of paper are since the ratio of the longer side to the shorter side is the same in both cases, i.e. 1,414.

Loading full text...

Full text loading...


Article metrics loading...


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error