All categories

3 years ago

The radius of a circle is 4 inches. What is the circle's circumference?

Mathematics

2 answers:

mojhsa [17]3 years ago

7 0

Answer:

8π inches or approximately 25.12 inches

Step-by-step explanation:

What's the circumference of a circle?

❖ The circumference of a circle is the distance around a circle.

How do we find the circumference of a circle?

❖ The formula to find the circumference of a circle is 2πr, where r =

radius. We can solve in terms of pi, or approximate pi to 3.14

Solving

$\pi * 4*2$
$\pi *8$
8π inches

or

$3.14*4*2$
$3.14*8$
25.12 inches

Have a lovely rest of your day/night, and good luck with your assignments! ♡

denis23 [38]3 years ago

5 0

Answer:

See below.

Step-by-step explanation:

Hi there!

We are given a circle, and inside that circle, we know that the radius of that circle is 4 inches

We want to find the circumference of the circle.

The circumference (C) is essentially the perimeter of a circle; the formula for the circumference of a circle is 2πr (r is the radius, π is pi)

Since we know the radius, we can substitute that value into the formula

C=2πr, r=4

C=2π*4

C=8π

If you need the answer in terms of pi, then the answer is 8π inches. However, if you need a number, then substitute an approximation for π, which will usually be 3.14 or 22/7

Using 3.14 for example,

C=8*3.14=25.12 inches

Using 22/7 meanwhile,

C=8*22/7=25.14 inches (rounded to the nearest hundredth)

So the answer is either 8π inches, 25.12 inches, or 25.14 inches (depending on how you need it approximated)

Either way, hope this helps!

See more on finding the circumference of a circle given the radius here: brainly.com/question/15882336

You might be interested in

What is the length of line segment RS? Use the law of sines to find the answer. Round to the nearest tenth. Law of sines:

Leno4ka [110]

Answer:

Correct Answer is B. 2.4 Units

Step-by-step explanation:

The missing picture in question is attached.

The Law of Sines is given as:

$\frac{Sin(A)}{a} = \frac{Sin (B)}{b} = \frac{Sin (C)}{c}$

Where,

a,b,c are the length of sides of triangle

A,B,C are the angles between the two sides of triangle

According to the picture attached, we have ΔRQS,

Let,

r = 3.1 units

R = 80°

s = 2.4 units

S = S

q = RS

Q = Q

Using law of Sines:

$\frac{Sin (R)}{r} = \frac{Sin (S)}{s}\\ \frac{Sin (80)}{3.1} = \frac{Sin (S)}{2.4} \\Sin (S) = \frac{Sin (80)}{3.1} * 2.4\\Sin (S) = 0.762\\S = Sin^{-1} (0.762) \\S = 49.68$ °

Since, triangle is constitute of total 180°, hence,

∠Q + ∠R + ∠S = 180°

∠Q + 80 + 49.68 = 180

∠Q = 180 - 80 - 49.68

∠Q = 50.32°

To find line segment RS, again use law of sines: $\frac{Sin (R)}{r} = \frac{Sin (Q)}{q}\\\frac{Sin (80)}{3.1} = \frac{Sin (50.32)}{RS}\\0.3177 = \frac{0.77}{RS}\\RS = 2.42 Units$

7 0

3 years ago

Read 2 more answers

Last Saturday the Movie Plex theater sold 1456 tickets the theater so six times as many regular price tickets as it's so discoun

Tatiana [17]

Earl isn't correct: the number 1,456 represents the total number of tickets sold, rather than simply six times the number of tickets sold.
Let x= the discount ticket price
1456 = 6x + x1456 = 7xx = 28
28 discount tickets were sold. The total number of tickets sold is equal to both the number of discount tickets sold plus six times that number: 1,456 = 6x+ x. Solve for x.

4 0

4 years ago

Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft use 3.14 for

lukranit [14]

To find the lateral surface area, use the following formula
la = π × r × s

Given:
π = 3.14
r = 7 ft
s = 13 ft

Solution
Input the numbers to the formula
la = π × r × s
la = 3.14 × 7 × 13
la = 285.74

The lateral surface area of the cone is 285.74 square feet

3 0

3 years ago

12. D(-5,-6), E(5,2), F(4,-4), G(-6,-12). Determine wether it as a parallelogram or not

Snowcat [4.5K]

Answer:

d(−5−6)(2.718282)(52)f(4−4)g(−6−12) =0

Step-by-step explanation:

d(−5−6)(2.718282)(52)f(4−4)g(−6−12) =0

8 0

3 years ago

shelly is going shopping at the mall to buy three pairs of shoes. she has a coupon for $2 off per pair of shoes after buying the

kvasek [131]

Okay, to start, we can multiply the $2 coupon by two because that is the amount of pairs she is going to by. So it would be $4 off. Now, if all of the shoes she purchased the same price, this is made a little easier. We can simply take $80 and $122 and add it by the $4 discount. Our new numbers would be $84 and $126. Now in order for this to work we would want all the numbers to be the same. We take $84 and divide it by three pairs, to get the values. For the least amount she can spend per pair is $28 and the most amount she can spend per pair is $42.

4 0

3 years ago

Read 2 more answers