⅕⅓⅛jcjdjfhfjfjfjdjcnfhfjcbcncnfndjdnfjdndi
in case your wodering its 2.1 BTUs/ft^3
Answer:
Step-by-step explanation:
18 frime factorizarion is 2*3*3
because 18= 2 *9=2*3*3
112