Charlie took apart (understatement) our flag stone patio to make way for coming additions to the house.
I asked him to save the stone of the approximately 96 square foot terrace so I could use it for another project.
Due to brick trim, planters and other allowances I knew we had a good 80 square feet of randomly shaped stone to use for a round patio in the back of the yard. I just wanted a place for a couple of chairs and maybe a small table which might inspire a dejeuner sur l’herbe.
I wanted to figure out how big a round patio might be. Recalling my geometry I know the area of a circle is calculated from the equation πr2 or 3.14 times the radius of the circle squared.
The equation: 80 square feet = 3.14 X r X r can be solved by dividing both sides by 3.14.
Which produces: 25.477 = r X r.
More simply: 25 = r X r, so r = 5.
Now I know I should have enough stone for a 5 foot radius (10 foot diameter) circle.
Now I need to find the perfect place to lay out my 10 foot (or less) diameter circle.
Do you remember anything about geometry? Or algebra? Or did you tell you teacher, “I’ll never use this!”