Answer:
x = 11
Explanation:
the area (A) of a trapezium is calculated as
A =
h (b₁ + b₂ )
where h is the perpendicular height between the bases b₁ and b₂
here h = 4 , b₁ = x , b₂ = 6 and A = 34 , then
× 4 × (x + 6) = 34
2(x + 6) = 34 ( divide both sides by 2 )
x + 6 = 17 ( subtract 6 from both sides )
x = 11