a plane flies northwards for 430km.if the plane flies eastward for 380km.how far is it from its starting point(ignore its height above the ground)

Answers

Answered by Ms. Sue
430^2 + 380^2 = x^2

Answered by John Lee
Square root everything:

430+380=x

810=x
Answered by Ms. Sue
John Lee is wrong.


184,900 + 114,400 = x^2

329,300 = x^2

573.8 = x
Answered by Victor
Ms.Sue there is a little error in your calculations.
Square everything on left hand side :
430^2 + 380^2 = x^2

= 184,900 + 144,400 = x^2

Add up left hand side
= 329,300 = x^2

Square both side
573.8 = x

x = 574km
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