Answer:
30.4 (c)
Explanation:
C
the area (A) of the trapezoid is calculated as
A = h (b₁ + b₂ )
where h is the perpendicular height between the bases b₁ and b₂
here h = 4 , b₁ = 11 , b₂ = 4.2 , then
A = × 4 × (11 + 4.2 ) = 2 × 15.2 = 30.4 cm²
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h (b₁ + b₂ ) × 4 × (11 + 4.2 ) = 2 × 15.2 = 30.4 cm²