A city council builds a 0.5 m concrete path around the garden as shown below.
Find the cost of the job if the workman charges $40.00 per square metre.
I apologise for my unprofessional reconstruction. All measurements are given in metres.
starting from the top left corner of the figure and going clockwise we can write the are as:
area=0.5*(5+0.5+0.5) + 0.5*12 + 0.5*(5+3+0.5+0.5) + 0.5*(12-8) + 0.5*3 + 0.5*8
then with this value, multiply it by $40/sqm and you have the answer!
I am awfully sorry! My brain is frazzled this afternoon - I had 4 hours' sleep. This problem is easier than I thought. For some reason unbeknownst to me, I thought I was dealing with perimeter of the path.
Perhaps you can help solve my other problem on Designing a Rug?