 
 <translate> Reasoning: The length of the chalkboard is 2 x the width of 3 feet = 6 feet. We can calculate area by multiplying the width and the length, so 3 feet x 6 feet = 18 feet. <hau> Tunanin: Tsawon allon rubutu shine 2 x nisa na 3 feet = 6 feet. Za mu iya lissafa yanki ta hanyar ninka nisa da tsawon, don haka 3 feet x 6 feet = 18 feet. 