Pavement

Calculate the length of the pavement that runs through a circular square with a diameter of 40 m if distance the pavement from the center is 15 m.

Correct result:

x =  26.458 m

Solution:

D=40 m h=15 m  r=D/2=40/2=20 m  (x/2)2+h2=r2  x=2⋅ r2−h2=2⋅ 202−152=10 7=26.458 m

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