Question

86mm = how many kilometers ​

Answer 1

$<hr><hr>$
86 mm = 0.000086 kilometers
$<hr><hr>$
$\large\sf{86 \: mm = 8.6 \times {10}^{5} \: kilometers}$
$<hr><hr>$

Answer 2

8.6 × 10-5 kilometre is the answer