5 because 5/6 is equal to 15/18
Answer:
Step-by-step explanation:
it is given that Square contains a chord of of the circle equal to the radius thus from diagram

If Chord is equal to radius then triangle PQR is an equilateral Triangle
Thus 
In triangle PQO applying Pythagoras theorem




Thus length of Side of square 
Area of square
Area of Circle
Ratio of square to the circle
Answer:
1579
Step-by-step explanation:
There is a particular formula you must use and it leads to this 420(1 + 0.18)^8=1579
Use calculating software for the quickest answer. The answer would be yes with a rate of increase of 1.75