20 decimeters in inches

Conversion formula
How to convert 20 decimeters to inches?

We know (by definition) that: $1\mathrm{dm}\approx 3.9370079\mathrm{in}$

We can set up a proportion to solve for the number of inches.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 20 ⁢ dm ≈ 78.740158 ⁢ in

Conversion in the opposite direction

The inverse of the conversion factor is that 1 inch is equal to 0.0127 times 20 decimeters.

It can also be expressed as: 20 decimeters is equal to $\frac{1}{\mathrm{0.0127}}$ inches.

Approximation

An approximate numerical result would be: twenty decimeters is about seventy-eight point seven three inches, or alternatively, a inch is about zero point zero one times twenty decimeters.