6 + 0 = 6. Which property:
This is an additive identity or identity property of addition
Look at the picture below
The answer is:
3×3×5×7×7 or
3²×5×7²
The Area of a circle =π.R² (R=radius). & π 3.14
Since you didn't give the length of the Radius, then the area of the circle=3.14R²