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# Tutor profile: Chelsey B.

Chelsey B.
Geotechnical Engineer

## Questions

### Subject:Geometry

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Question:

Given a circle of radius 10 cm that has a hole in it that has a diameter of 10 cm, determine the area of the circle minus the hole.

Chelsey B.

The area of a circle is determined using the equation Area=Pi*radius squared (A=Pi*r^2). To determine the area of the circle minus the area of the hole we will do Area=(Pi*10^2)-(Pi*5^2)=235.5. Note that for the smaller circle the problem statement gave us the diameter, so we had to divide that by 2 to get the radius of the hole.

### Subject:Basic Math

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Question:

If 1+2=3 2+3=5 3+4=7 What is the next logical equation in the list

Chelsey B.

Evaluating the patterns, we can see that each equation is a number X + the number X+1 and the first number in the equation is equal to the number X+1 from the previous equation. So applying that logic the next logical equation would be 4+5=9.

### Subject:Civil Engineering

TutorMe
Question:

What is the best method for determining the settlement of a layer of cohesionless soil?

Chelsey B.

There are several methods for determining the settlement of soils. It is important to understand how each method works and what soil types it applies to. For cohesionless soils such as sands, the Hough Method is a good method for evaluating the settlement.

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