Isosceles trapezoid

What is the height of an isosceles trapezoid, the base of which has a length of 11 cm and 8 cm and whose legs measure 2.5 cm?

Correct result:

h =  2 cm

Solution:

a=11 cm c=8 cm b=2.5 cm x=(a−c)/2=(11−8)/2=32=1.5 cm h=b2−x2=2.52−1.52=2 cm

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