Question

Simplify and round to the appropriate number of significant digits
$\left(a\right)$ $16.235\times 0.217\times 5$
$\left(b\right)$ $0.00435\times 4.6$

Answer 1

Ans a-

$16.235\times 0.217\times 5=17.614975$

Since the least no.of significant digit is one, so the final answer should be rounded off upto one significant digit.

Therefore, Ans is $20$

Ans b-

$0.00435\times 4.6=0.02001$

Since the least no.of significant digit is two, so the final answer should be rounded off upto two significant digit.

Therefore, Ans is $0.02$