Surveyor

Calculate the area of ​​what may vary rectangular, if it focused by surveyor and found the dimensions 18 x 15 m while in each of the four joint points can be position deviation 25 cm?

Correct result:

ΔS =  23.3 m2

Solution:

 252=c2+c2 c=251002=0.177 m S=ab=270 m2 S1=(a+c)(b+c)=281.79 m2 S2=(ac)(bc)=258.46 m2 ΔS=S1S2=23.3 m2



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