100 points!!! please help me it's about finding the area of this triangle in the picture!!

Answer:
198 sq cm
Step-by-step explanation:
[tex]A(trapezoid) = \frac{1}{ \cancel 2} (21 + 12) \times \cancel{12} \\ \\ =33 \times 6 \\ \\ = 198 \: {cm}^{2} [/tex]
Answer: 198
Step-by-step explanation:
add the bases together which is 12 + 21 = 33 and the heigh is 12 which mean u multiply the base andheight and its 198 because the answer that is not divided has to be divided by 2