This is the pro version of the "Circle Calculator" application (See bottom for link).

This version:
• Ad-free.
• View calculation steps and formulas.
• Improved layouts and optimised performance.

This app is a circle calculator.

• It is ideal for carrying out quick and accurate value calculations.

• Able to calculate either the radius, diameter, circumference, or the area of a circle given valid known values.

• Accurate to 16 decimal places.

• Simple minimalistic interface to enable ease of use.

Circle Calculator:
https://play.google.com/store/apps/details?id=horitech.h.b.com.circlecalculator