Diameter of the earth is 12756000 km . in 1996 , a new planet was discovered whose diameter 5/86 of the diameter of the earth . find the diameter of this planet in km. Share with your friends Share 2 Dhruv answered this 12756000×5÷86=741627.9km -1 View Full Answer Evan Mathew answered this and the new planet 647477282922=233303 =2376378293 1 Abhishak Ponnambalam answered this 2376378293KM is the answer 1 Ishaan answered this 2376378293 1 Pratyush Pothal answered this nice question 0