![A = 0.4\cdot \Sigma\limits_{t = 1}^{n} [2\cdot (2+0.4\cdot t)^{3} - 4]](/tpl/images/1353/2552/4d17a.png)
.
(1)
- Area below the curve, in square units. 
- Number of rectangles, no units.
- Lower bound of the interval, in units.
- Length of the interval, in units.
- Summation index.
, 
, 
and 
, then the area below the curve is represented by the following equation:
Please help me out tired want to sleep
...
Answers: 3
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