Trapezoid 7537

Diagonal alpha equals 0.4 m, and diagonal beta equals 0.4 m in the isosceles trapezoid. Side AB is 120 cm, and side DC is 7.6 dm. Find the length of arms in an isosceles trapezoid. Please result round to 2 decimal places.

Correct answer:

r =  102.3719 cm

Step-by-step explanation:

u=1.4 m cm=1.4 100  cm=140 cm a=120 cm c=7.6 dm cm=7.6 10  cm=76 cm  x=(ac)/2=(12076)/2=22 cm  h=u2(c+x)2=1402(76+22)2=14 51 cm99.98 cm  r=h2+x2=99.982+222=4 655=102.3719 cm

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