Answer:
98.99%
Step-by-step explanation:
The combined reliability of both components must be 98%. Given that both components must be functional and have the same reliability 'r', the minimum value of 'r' that meets the system requirements is given by:

The level of reliability required for each component is 98.99%.
Volume = L x W x H
6.1 x 5.4 x 8 = 263.52 cm^3
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C: 43
83 is the answer to a similar problem on ape-x that's why the other answer says 83, hope this helps.