Question

A ream of paper has 500 pages and the stack of paper is 4.5 × 10^(-2 metres high.
Find the thickness of 1 sheet of paper. State the number of significant figures in
your answer

Answer 1

Given that

The height of stack/ream of paper

h = 4.5x10^-2 meters

h = 4.5x10^-2 x 10³ mm

h = 45 mm (millimetres)

Total number of papers in the stack n = 500

So the thickness of each sheet t = h÷n = 45 ÷ 500

t = 0.09 mm