All categories

3 years ago

28) Find the circumference of a circle with a diameter of 2.5 inches. (it = 3.14)

Mathematics

2 answers:

tino4ka555 [31]3 years ago

8 0

Step-by-step explanation:

Using the formulas

C=2πr

d=2r

Solving forC

C=πd=π·2.5≈7.85398in

antoniya [11.8K]3 years ago

3 0

Answer: Circumference = 7.85 inches

Concept:

Here, we need to know the idea of circumference.

The circumference is the perimeter of a circle. The perimeter is the curve length around any closed figure.

Circumference = 2πr

r = radius

π = constant

Solve:

Given information

r = (1/2) d = (1/2) (2.5) = 1.25 inches

π = 3.14

Given formula

Circumference = 2πr

Substitute values into the formula

Circumference = 2 · (3.14) · (1.25)

Simplify by multiplication

Circumference = (2.5) · (2.14)

Circumference = $\boxed {7.85 inches}$

Hope this helps!! :)

Please let me know if you have any questions

You might be interested in

What is the area of a pyramid?

Naddika [18.5K]

Answer:

Area of a pyramid = (1/3) x (base area) x (height)

4 0

3 years ago

Interest centers around the life of an electronic component. Let A be the event that the component fails a particular test and B

nekit [7.7K]

Answer: a. 0.61

b. 0.37

c. 0.63

Step-by-step explanation:

From the question,

P(A) = 0.39 and P(B) = 0.24

P(success) + P( failure) = 1

A) What is the probability that the component does not fail the test?

Since A is the event that the component fails a particular test, the probability that the component does not fail the test will be P(success). This will be:

= 1 - P(A)

= 1 - 0.39

= 0.61

B) What is the probability that a component works perfectly well (i.e., neither displays strain nor fails the test)?

This will be the probability that the component does not fail the test minus the event that the component displays strain but does not actually fail. This will be:

= [1 - P(A)] - P(B)

= 0.61 - 0.24

= 0.37

C) What is the probability that the component either fails or shows strain in the test?

This will simply be:

= 1 - P(probability that a component works perfectly well)

= 1 - 0.37

= 0.63

3 0

3 years ago

Tickets for an amusement park cost $10 for adults and 6 for children find the total cost of 2 adults and 3 children

wolverine [178]

It would be $38 total, because it would be 20 for the adults and 18 for the children

3 0

3 years ago

Read 2 more answers

Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Which shows the correct substitution of the

posledela

Formulas, answers and solutions are in the file.

x= (2 +- 4)/2

x1= 3; x2= -1

Download docx

6 0

3 years ago

Mikaela will invest $2,500 in an account that pays her 7.5% over 2 years. How much interest will she receive? Also, how much wil

Anika [276]

Answer:

i. $375

ii, $2875

Step-by-step explanation:

Given

Princinpal= $2,500

rate= 7.5%

time= 2 years

Required,

The simple interest, and the final amount

Step two:

SI= PRT/100

SI= 2500*7.5*2/100

SI=37500/100

SI=$375

The simple interest is $375

And the final amount = $2,500 +$375= $2875

5 0

3 years ago