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2 years ago

The diameter of a circle measures 28 mm. What is the circumference of the circle?

Mathematics

1 answer:

Papessa [141]2 years ago

8 0

Answer:

C = 87.92 mm

General Formulas and Concepts:

Symbols

π (pi) ≈ 3.14

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Circumference Formula: C = πd

C is circumference
d is diameter

Step-by-step explanation:

Step 1: Define

Diameter d = 28 mm

Step 2: Solve

Substitute in variables [Circumference Formula]: C = 3.14(28 mm)
[Circumference] Multiply: C = 87.92 mm

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Read 2 more answers

Determine which of the following numbers could not represent the probability of an event. Explain your reasoning. (a). 33.3% (b)

statuscvo [17]

Answer:

B and F

Step-by-step explanation:

The simple golden rule that we need to know here is

"The probability of any event is always between 0 and 1 inclusive"

If an event has a probability of p(x), we can say:

$0 \leq p(x) \leq 1$

Also, probability is ALWAYS POSITIVE.

Thus,

A) OK because 33.3% is 0.333, which is between 0 and 1

B) NOT OK, because probability isn't negative

C) 0.0002 is in between 0 and 1, so possible

D) 0 probability means it can't happen, so that's okay as well

E) this is a fraction with numerator less than denominator, which means its between 0 and 1, so OK

F) this fraction's numerator is greater than denominator, so it's greater than 1. Probability can't be greater than 1, so NOT OK

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