Circumference 7052

The trapezoid ABCD is given (AB || CD, AB perpendicular to AD). Calculate its circumference if | AB | = 20cm, | CD | = 15cm, | AD | = 12cm. Pythagorean theorem

Correct answer:

o =  60 cm

Step-by-step explanation:

a=20 cm c=15 cm d=12 cm  b=(ac)2+d2=(2015)2+122=13 cm  o=a+b+c+d=20+13+15+12=60 cm

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