Answer:
n = -29
Step-by-step explanation:
n + 16 = - 13
- 16 -16
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136 cm^2
The area of a trapezoid is found 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 ( 12+22) *8
= 1/2 (34) * 8
= 136 cm^2