Find the Perimeter or Circumference $3 \mathrm{~cm}$ By $12 \mathrm{~cm}$ A) $18 \mathrm{~cm}$

Multiple Choice

Find the perimeter or circumference.
-A rectangle measuring $3 \mathrm{~cm}$ by $12 \mathrm{~cm}$

A) $18 \mathrm{~cm}$
B) $15 \mathrm{~cm}$
C) $12 \mathrm{~cm}$
D) $30 \mathrm{~cm}$