Area of circle = πr²
Area of circle = π(4÷2)² = 12.57 cm²
Answer:
That's correct. The answer would be 16.3 when you add them both together.
Move all the logarithms on the left hand side, and all the constants on the other:

Use the rule of logarithms

To rewrite the equation as

Evaluate 2 to the power of each side:

Multiply both sides by 2x:
