Question

A trapezoid is 64cm^2. The height is 12 cm and one base is 4cm. What is the length of the missing base?

Answer 1

20/3

Step-by-step

(base1+base2)/2 * height = area of a trapezoid

64/12=16/3

16/3*2 = 32/3

32/3-4 = 20/3