Question
A circular plate of radius $5 \, \text{cm}$ is heated. Due to expansion, its radius increases at the rate of $0.05 \, \text{cm/sec}$. The rate at which its area is increasing when the radius is $5.2 \, \text{cm}$ is
A circular plate of radius $5 \, \text{cm}$ is heated. Due to expansion, its radius increases at the rate of $0.05 \, \text{cm/sec}$. The rate at which its area is increasing when the radius is $5.2 \, \text{cm}$ is