Question

In a pack, there are 5 books, each of thickness 20 mm and 5 paper sheets each of thickness
0.016mm. What is the total thickness of the pack.
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Answer 1

thickness of books =5×20=100mm

thickness of paper sheets =5×0.016=0.080mm

Total thickness=100+0.080=100.08mm

= 1.0008×10-2mm