Respuesta :

72=b(4)   divide both sides by 4
 ÷4 ÷4   
b=18in
Cetacea

Base = 18 inches.

Given that:

Area = A = 72 square inches

Height = h = 4 inches

Given A=bh.

So,

[tex]72 = b(4)\\b=\frac{72}{4}=18[/tex]

So, base = 18 inches.

Learn more: https://brainly.com/question/12356025