A model of the Bell X-1 airplane is built to the scale of 1 in : 1.5 ft. Determine the wingspan of the actual plane if the wingspan of the model is 13.7 in.?
2007-06-03 14:53:28 · 4 answers · asked by mcchen327 1 in Science & Mathematics ➔ Mathematics
13.7 " * 1.5 ft/1" = 20.55 ft
2007-06-03 15:04:26 · answer #1 · answered by telsaar 4 · 0⤊ 0⤋
13.7 in/ W = 1in /1.5ft
13.7 in * 1.5 ft = 1 in * W
20.55 in-ft / 1 in = W
W = 20.55 ft.
However, your model is flawed. The Bell X-1 had a wingspan of 28 feet.
2007-06-03 21:57:30 · answer #2 · answered by TychaBrahe 7 · 0⤊ 0⤋
Set up a proportion:
1in/1.5 ft=13.7/x
Now cross multiply
x=20.55 ft.
2007-06-03 21:56:32 · answer #3 · answered by jkicker 3 · 0⤊ 0⤋
it's easy if you set it up as an inequality. lets start by converting to inches so we have a common term
1in : 18in then
1in/18in = 13.7in/x multiply each side by x and 18 in
1in(x) = 13.7in(18in)
1in(x) = 246.6in^2 now divide each side by 1in
x = 246.6in = 20 ft 6.6in
2007-06-03 22:01:20 · answer #4 · answered by Jen 3 · 0⤊ 0⤋