24 cm is.
Chat with our AI personalities
28
It is: 12 units in length
perimeter of a rectangle is 20 on each side
Area: 15ab Perimeter: 2(3a+5b) or as 6a+10b
Simple the Perimeter you just add the outside numbers. For area. When I look at an octagon I see a rectangle and two Trapezoids on either side of the rectangle. So find the area of each object then add the areas up and voila you got the area of a rectangle.