The rectangular trapezoid ABCD with a right angle at the vertex A has sides a, b, c, and d. Calculate the circumference and the area of the trapezoid if given: a = 25cm, c = 10cm, d = 8cm

Correct answer:

o =  60 cm
S =  140 cm2

Step-by-step explanation:

a=25 cm c=10 cm d=8 cm  x=ac=2510=15 cm  x2+d2 = b2  b=x2+d2=152+82=17 cm  o=a+b+c+d=25+17+10+8=60 cm
S=2a+c d=225+10 8=140 cm2

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