Answer:
a = 12
b = 2
c = 11
Step-by-step explanation:

The number of full periods and classes does a 202-digit number have are 1 and 3 respectively.
<h3>What are periods?</h3>
Periods are simply groups of three digits separated by commas when writing numbers in standard form.
The digit number, 202 has 1 period.
Classes is simply the number of digits in a set.
Example: 500 has 3 classes
We can say that the 202 digit number has 1 period and three classes.
Thus, the number of full periods and classes does a 202-digit number have are 1 and 3 respectively.
Learn more about period here:
https://brainly.in/question/39059156
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<h3 />
Answer:
Step-by-step explanation:
surface area of cuboid=2(l*b+b*h+h*l)
=2(15*15+15*7+7*15)
=2(225+105+105)
=2*435
=870
You have to multiple b× w×h. the answer would be 342
54x = 864
A. x = 17 → 54(17) = 918 ≠ 864
B. x = 2 → 54(2) = 108 ≠ 864
C. x = 19 → 54(19) = 1,026 ≠ 864
<h3>Answer: D. none of these</h3>
Solution
54x = 864 <em>divide both sides by 54</em>
x = 16