30 m^2
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 (b1 +b2 )h
where b1 and b2 are the lengths of the bases and h is the height
A = 1/2 ( 14 + 6) *3
=1/2 (20) 3
= 30 m^2
find out the value of b
step-by-step explanation: