public string Get(double radiusD, double widthF, double heightF, double lengthF) { string result = $"calculate me {radiusD} {widthF} {heightF} {lengthF}"; if (DoubleValueVerifier.IsDoubleArrayValid( new double[] { radiusD, widthF, heightF, lengthF })) { CircleModel door = new CircleModel(radiusD); CubeModel fridge = new CubeModel(widthF, heightF, lengthF); result = CalculatorMain.CubeToCircle(door, fridge) ? $"true, door: {door.ToString()}; fridge: {fridge.ToString()}" : $"false, door: {door.ToString()};fridge: {fridge.ToString()}"; } else { result += "; Some bad value(s)!"; } return(result); }