Respuesta :

1 foot = 12 inches
 3 feet x 12 inches = 36 inches

answer is D

In every foot, there’s 12 inches. Since there are 3 feet, there are three 12 inches. We have to multiply 3 by 12 to find the total amount of inches.
3•12=36
D), there are 36 inches in 3 feet.