kbuhvu

02.10.2019 • 

Mathematics

Baron goldmann, a famous aristocrat, has been murdered. you are a famous detective who has

investigated the crime and determined that there are three possible suspects: george, jessica and

rudolph. you are certain of these facts:

-exactly one of the three suspects is the murderer.

-the murderer has lied to you, but the other two suspects have told the truth.

a lie means that the statement is false according to the rules of logic that we have learned.

you also have the following three (conditional) statements from the suspects:

1. from george: "if rudolph isn't the murderer, then jessica is."

2. from jessica: "if george is the murderer, then i am innocent."

3.from rudolph: "if i am innocent, then george or jessica is the murderer."

who is guilty, and why?

Ответ:

tmanpierce

26.02.2021

Mathematics

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468.4 meters

Step-by-step explanation:

Find the width of the rectangle.

The area of a rectangle is A=length*width. Substitute the values of length and area and solve for width.

A=length*width

8,400=140*width

60= width

Use the width of the rectangle to find the circumference of the semicircles. Since each semicircle is half of a circle, the perimeter of the two semicircles is equal to the circumference of one circle.

The circumference of a circle is equal to pid, where d is the diameter. The diameter of the semicircle is the same as the width of the rectangle.

So, the diameter is 60 meters. Substitute the diameter into the formula for the circumference and simplify using 3.14 for pi.

≈188.4

(2 times 140)+ 188.4

So, the perimeter of the track is 468.4 meters.

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