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Exponents And Powers

Question
CBSEENMA8002724
Wired Faculty App

In a stack there are 5 books each of thickness 20 mm and 5 paper sheets each of thickness 0.016 mm. What is the total thickness of the stack?

Solution

∵   Thickness of one book = 20 mm

∴        Thickness of 5 books = 5 space cross times space 20 mm
                                     = 100 mm
Again,
   Thickness of 1 paper sheet = 0.016 mm

∴ Thickness of 5 paper sheets = 5 cross times 0.016 mm
                                       = 0.080 m

∴              Total thickness = 100 mm + 0.080 mm
                                    = 100.08 mm
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