One dimension of a rectangular map is 8 inches and the perimeter is 40 inches. What is the other dimension of the map?

A. 14 inches

B. 12 inches

C. 4 inches

D. 2 inches

B. 12 inches

The perimeter of a rectangular geometry is 2 * (l + b)

where, l is the length

and b is the other dimension of rectangle

let the given dimension be 8 inches. We can formulate an equation from given information,

2 * (8 + b) = 40

=> 8 + b = 40/2 = 20

=> b = 20 - 8 = 12

therefore, other dimension is 12 inches.