I think you count the squares in the middle or radius ?
Steps:
1. You can do a proportion
X/100 times 48/128
2. You do 48 times 100 which is 4,800
3. You divide 4,800 by 128
4. Your answer is
37.5%
First we need to figure out the circumference of the gardening area. The circumference fell is the length around the circle. We can use the circumference formula:
2*pi*r or pi*d
Where r = radius and d=diameter
If you plug in the diameter of 18 ft you get:
18 * pi
= 56.55 ft
Since he can only buy whole foot amounts, we will round up to 57 ft, not down, because he can have a little extra, but can't be under the amount he needs.
Now if it cost $1.50 for every foot, we just multiply that by our footing
1.5 * 57 = $85.50
If your friend was working from your figures, then his estimate was
waaaay off, like in outer space.
If you paid $2.40 for 3434 pounds, then that works out to something
like 0.007¢ for each pound. His estimate of $1.80 is more than 2,500
times as much as you paid for each pound.
Even allowing some slack for the quantity discount that you surely
must have been awarded for buying 1.7 tons of them all at once, still
that doesn't support his wild estimate in any way.
He'd be better off buying a few pounds from you, at, say, 50¢ a pound.
He needzum, you gottum, he'll gettum, and you'll never missum. That way,
you'll both make a killing, and it's a win-win-win all around.
What do you need help with maybe i can help.