Phan Huy Toàn
02/09/2017 at 20:49-
Math You Like 02/09/2017 at 20:56The rectangle perimeter is :
(12 + 8) x 2=40 (cm)
Answer: 40 cm
Selected by MathYouLike -
The perimeter of the recangle is :
\(P=\left(12+8\right)\cdot2=20\cdot2=40\left(cm\right)\)