What is the prime factorization for 180?

a. 4 • 5 • 9
b. 2^2 • 5 • 9
c. 2^2 • 3^2 • 5
d. 2 • 9 • 10

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

rounding to the nearest thousandth would be 452,000