Length 21cm area 315cm2 find the breath ​

Breadth = 15 cm

Step-by-step explanation:

Area = length x breadth

315 = 21 x breadth

                [ dividing both sides by 21 ]

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✍︎ C.Rose❀

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