The thickness of an 800 pages of book is 18mm. Calculate the thickness of one leaf of the book giving your answer in meters and in standard form

Question 1 Report

2.25 x 10-4m

50 x 10-4m

2.25 x 10-5m

4.50 x 10-5m

Answer Details

Thickness of an 800 pages book = 18mm to meter
18 x 103m = 1.8 x 10-2m
One leaf = $\frac{1.8 \times 10^{- 2}}{800}$
= $\frac{1.8 \times 10^{- 2}}{8 \times 10^{2}}$
= $\frac{- 1.8}{8}$ x 10-4
= 0.225 x 10-4
= 2.25 x 10-5m

Read lesson note on Fractions, Decimals And Approximations (WAEC)

Fractions, Decimals And Approximations

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