Answer: The answer is 314.28 cm² (approx.).
Step-by-step explanation: Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.
We need to find the area 'A' of the circular cross-section of the pipe.
Given, diameter of the circular section is

So, the radius of the circular cross-section will be

Therefore, cross-sectional area of the pipe is

Thus, the answer is 314.28 cm² (approx.).
Answer:
129 points
Step-by-step explanation:
Let L and C represent the scores of Luke and Caleb, respectively.
L = 2C -15 . . . . . Luke scored 15 less than twice the number Caleb did
L +C = 201 . . . . . they scored 201 points altogether
Add twice the second equation to the first:
2(L +C) + (L) = 2(201) + (2C -15)
3L +2C = 387 +2C . . . . simplify
3L = 387 . . . . . . . . . . . . .subtract 2C
L = 387/3 = 129 . . . . . . .divide by 3
Luke scored 129 points.
Answer:
The formula: e7 = (b7*d7)+(c7*d7*1.5)
Step-by-step explanation:
Given:
Hours worked = b7
Hourly rate = d7
Overtime hours = c7
Salary calculation = e7
Salary = Hours worked*hourly rate + (overtime*hourly rate)*1.5
Formula
e7 = (b7*d7)+(c7*d7*1.5)
The formula e7 = (b7*d7)+(c7*d7*1.5)
Hope this will helpful to you.
Thank you.

- What is the solution to the inequality -3x-42>3 ?


Add 42 to both sides.

Add 3 and 42 to get 45.

Divide both sides by -3. As -3 is <0, the inequality direction has changed.

Divide 45 by -3 to get -15.

Answer:
$0.26
Step-by-step explanation:
12/46=.26