Answer:
area of a circle with a diameter of 4cm=π(d/2)²
=π(4/2)²=π2²=4π cm ² is your answer or 4×3.16=12.48 cm²
A≈12.57cm²
Explanation:
A=1
4πd2=1
4·π·42≈12.56637cm²
3.5m questions
4.4m answers