Answer:
Part A : 9.555 . 10^38
Part B : 7.4 . 10^-3
Step-by-step explanation:
<h3>Part A</h3>

<h3>Part B</h3>


A blood cell is too small. So the more reasonable measurement is 0.0074mm.
Answer:
$12.50
Step-by-step explanation:
divide
Answer: 16 square feet
Step-by-step explanation: In order to calculate how much total screen she needs you need to calculate each section.
The small ends are 2 ft x 1 ft, so you need 2 feet for each end, or 4 feet total.
The long sides are 3 ft x 2 ft, so you need 6 feet for each end, or 12 feet total.
The total screen needed for the sides is 4 + 12 = 16 square feet.