If it were a complete circle, its circumference would be
(π) x (diameter) = (π) x (2R) = 70 π inches .
Since it's only half of the circle, the length of the curved part is
70 π / 2 = 35 π = <em>109.9 inches</em> .
It would be 20 years because if En is 100 Mark will be 25. 25 times 4 is equal to 100
Answer: 
Step-by-step explanation:
Given
The force between the two particles is inversely proportional to the distance between them

When the distance is 2 m, the force is 10 N. For 5 m distance, it is

Thus, the force between them is
It's an expression which <span>shows that two quantities are not equal.</span>