Answer:
62.5 square miles
Step-by-step explanation:
if the scale is 1 in. = 5 mi, then 1 square in. = 25 square miles
so if 1 in^2 = 25 mi^2
then you make a proportion
25/1 = x/2.5
(the square inches on the bottom and the square miles on top)
solving for x gives you
x=62.5 square miles
21/2
10.5 is correct, but that's a decimal
21/2=10.5
(3×10×8)÷26400= 0.00909090909
hope it helps
Answer: 7 3/4
3 1/4 + 4 2/4 = 7 3/4