Question

Evaluate :
vi) $(0.2{)}^3\times 0.05$

Answer 1

Step: Evaluate
Given:$(0.2{)}^3\times 0.05$
$\Rightarrow (0.2{)}^3$
$\Rightarrow 0.2\times 0.2\times 0.2$
$=2\times 2\times 2$
$=8$
$\Rightarrow 8\times 5$
$=40$
$0.2$ has $1$ decimal place and is multiplied thrice, and $0.05$ has $2$ decimal places. So, their product will have $1+1+1+2=5$ decimal places.
$\therefore (0.2{)}^3\times 0.05=0.0004$