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3 years ago

How do you find the radius of a circle

Mathematics

2 answers:

nlexa [21]3 years ago

6 0

Answer:

Step-by-step explanation:

if you are given diameter ,then radius=diameter/2

if you are given the co-ordinates of extremities of diameter then find diameter by distance formula and then radius as given above.

if area is given the area=πr²

r=√(area/π)

if circumference C is given then C=2πr

r=C/2π

tia_tia [17]3 years ago

3 0

Answer:

To calculate the radius of a circle by using the circumference, take the circumference of the circle and divide it by 2 times π.

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5/7 divided by 20/5 <br> then simply it completely

Pavlova-9 [17]

Answer:

5 / 28

Step-by-step explanation:

5/7 ÷ 20/5

= 5/7 x 5/20

= (5 x 5) / (7 x 20)

= 25 / 140 (divide numerator and denominator by 5)

= 5 / 28

5 0

3 years ago

408 rounded to the nearest tenth

andreev551 [17]

408 round to the nearest tenth: 410

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2 years ago

Triple a number divided by 5

hjlf

I think 15 is the answer I’m not sure tho

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3 years ago

18s^2+2g-12+15g-9s^2

algol13

Answer:

9s^2 + 17g - 12

Explanation:

(basically combine like terms)

the s^2 are like terms, so that would get you 18s^2 - 9s^2 = 9s^2

then the g’s are like terms,
15g + 2g = 17g

then the -12 is all on its own

if you put it all together:

9s^2 + 17g - 12

4 0

3 years ago

What is the easiest way to re learn ratios

enot [183]

Answer:

Step-by-step explanation:

Ratios are no different from fractions. They are "comparisons" of 2 or more things. Instead of fraction bars, they use colons to separate 2 different things.

For example:

$\frac{1}{2}$ $=1:2$

Now, let's do an example problem.

Ex: find the ratio of 5 cats to every dog.

We are comparing 5 cats to every 1 dog, so the ratio is:

$5:1$

Don't make thing more complicated to yourself, and don't overthink it. They are exactly like fractions. So treat them as such!

3 0

2 years ago

How do you find the radius of a circle​

How do you find the radius of a circle