Question

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?​

Answer 1

Answer:

Total number of books in the stack=5

thickness =20mm

Total thickness of the book =20×5=100

Total number of paper =5

thickness of the paper =0.016mm

Total thickness of the paper =5×0.016=0.080

Total thickness of the stack =100+0.080=100.080=1.0008×10^2 mm

Hope this is helpful for you.

Answer 2

Thickness of a book = 20mm

Thickness of 5 books =$5\times20\ mm5×20 mm$

= 100mm

Thickness of 1 paper sheet = 0.016 mm

Thickness of 5 paper = $0.016\times50.016×5$

= 0.080 mm

total thickness of stack = Thickness of 5 books + thickness of 5 paper sheets

= 100+0.080

= 100.08

= 1.0008$\times10^21.0008×10$