the real length of 200 ft "translates" to scaled 2ft 6".
as there are 12 inches in 1 ft, we have therefore 2×12 + 6 = 30 inches.
now, we have a real length of 50 ft.
that is 1/4 of the already analyzed length of 200 ft.
since scaling is a linear function, that means the same factor (1/4) applies on the scaled diagram.
so,
30 × 1/4 = 15/2 = 7.5 ≈ 8 inches
the height on the scale diagram is 8 inches.
