Given that the driveway is a rectangle.
Given that the driveway length is 20ft and width is 15ft.
Asked to find perimeter.
Well this is simple, all you need to do is to add all the sides together. A rectangle has 4 sides, two parallel sides. We are given only 2 sides because that’s all we need. We can either add the given numbers twice or multiply. I’ll show you both.
Here’s the addition:
Perimeter=20ft+15ft+20ft+15ft
Perimeter=70ft
Here’s the multiplication+addition:
Perimeter=20ft(2)+15ft(2)
Perimeter=40ft+30ft
Perimeter=70ft
And another:
Perimeter=(20ft+15ft)(2)
Perimeter=(35ft)(2)
Perimeter=70ft
These are the three ways to solve this problem. Hope this helped!