In a scale drawing, the tength of a rectangular room is 6 inches, and the
width is 3 inches. The actual length of
the room is 18 feet.
a. What is the scale of the drawing?

b. In a new scale drawing of the same
room, the length of the room measures
4 inches. What is the scale of the new
drawing?

a) 1/36in.

b) 1/54in

Step-by-step explanation:

a) convert feet to inches:

L = 18ft = 216in

if length in image is 6in then 216in/6in. 36in is Scale.

width of original room = 108in.

check: 216*1/36 = 6

b) L = 18ft = 216in

216in/4in = 54in.

check: 216*1/54 = 4

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m