Posted by **Thomas** on Sunday, January 12, 2014 at 4:35pm.

The area of rectangle ACED is 80 square centimeters, and the area of triangle BCE is 30 square centimeters, If AD = 4 centimeters, then what is AB ?

a. 5 cm

b. 10 cm

c. 15 cm

d. 20 cm

e. 25 cm

please answer and explain

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