Question

In a stack there are 5books of thickness 20mm and 5paper sheet each of thickness 0.016mm .what is total thickness of the stack

Answer 1

hey mate here is your answer

5*20 = 100
total thickness of book is 100
5 * 0.016 = 0.08
total thickness of sheet is 0.08
than
total thickness of stack is 100.08

Answer 2

$\rm{Total \: number \: of \: books \: in \: the \: stack \: = \sf \purple{5}}$

$\rm{thickness = \sf \purple{20mm}}$

$\rm{Total \: thickness \: of \: the \: books = \sf \purple{20×5=100}}$

$\rm{Total \: number \: of \: paper =\sf \purple{5}}$

$\rm{thickness \: of \: the \: paper =\sf \purple{0.016mm}}$

$\rm\footnotesize{Total \: thickness \: of \: the \: paper \: \sf \purple{=5×0.016=0.080}}$

$\rm \blue{Total \: thickness \: of \: the \: stack = }$

$\fcolorbox{purple}{pink}{=100+0.080=100.080=1.0008×10² mm}$