We have a 17 by 20-foot garden. We want to pour cement for a sidewalk 3 feet wide around the garden. To make the forms for the cement, we will need to buy some 2 by 4 inch lumber. How many feet of 2 by 4 inch lumber will we need just for the perimeter of the walk? (Consider both inside and outside perimeter.)
Geometry - MathMate, Saturday, March 12, 2011 at 10:04am
Perimeter = 2(width+length)
For outside of sidewalk,
width = 17+2*3'=23'
Can you calculate the outside perimeter and add up the two perimeters?
Geometry - Madz, Thursday, February 16, 2017 at 7:59pm