Which equation can be used to find the perimeter of a regular octagon with sides of length 12 m?

a.
p = 8 + 12

b.
p = 8(12)

c.
p = 12 ÷ 8

d.
p = 2(8) + 2(12)

The basic definition of a perimeter is the boundary line of an object. For shapes and figures, this is basically the sum of the outermost sides that define the object. Since an octagon has eight sides, with each side measuring 12m, the perimeter can be obtained by multiplying 12 m by 8 sides, or in equation form:

P = 8(12)

Among the choices, this is letter B.