A problem involving with sin rule

[kate]

The smallest side of a triangle has a relationship with the radius of the prescribed around the triangle circumference as 6:5, and the other sides are 20cm and 21cm respectively. Find the length of the smallest side in the triangle.

[Guest]

In my opinion the law of sines is an equation relating the lengths of the sides of an arbitrary triangle to the sines of its angles and the law is sinA/a=sinB/b=sinC/c and I think if you will follow this rule you can solve this problem definitely.

[DeusAbscondus]

Kate, you need to be a bit more specific about what relationship the smallest side has to the radius of the circle.
And what is the circle circumference?

Deus'Abs