Can someone help me find the length of b of the unknown side in this triangle? Thanks! :)

4

Step-by-step explanation:

Using pythagoras theorem =>

b=

b=

b=

b=

b=4

4

Step-by-step explanation:

Use the Pythagorean Theorem:

The measure of the hypotenuse is 5. The measure of the given leg is 3.

The unknown side of the triangle should be four units.

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