The cross-section of each elephant foot is circular, and its circumference is $1.4\,\text{m}$. The elephant’s mass is $5400\,\text{kg}$. The elephant is motionless, with all four feet touching the ground. Take the pressure beneath each foot to be equal. What is the approximate pressure exerted on the ground by one of the elephant’s feet?
- A$8.7\,\text{kPa}$
- B$35\,\text{kPa}$
- C$85\,\text{kPa}$
- D$340\,\text{kPa}$