The perimeter of the trapezoid ABCD is the sum of its sides which equals 57 in.
To find the perimeter of the trapezoid ABCD, we simply need to add together the lengths of all four sides.
The given lengths are AB = 15 in, AD = 12 in, BC = 15 in and CD = 15 in.
The formula for the perimeter (P) of any quadrilateral is P = side1 + side2 + side3 + side4, hence for trapezoid ABCD we have:
P = AB + BC + CD + AD
P = 15 + 15 + 15 + 12
P = 57 in
P = 57 in (Option d)
The probable question may be:
Find the perimeter of the trapezoid ABCD
Given, AB = 15 in. AD = 12 in. BC = 15 in. CD = 15 in.
a) 129 in
b) 78 in
c) 75 in
d) 57 in