The circumference of a circle is 28meters. What is it’s radius

Mathematics

2 answers:

uranmaximum [27]4 years ago

8 0

Answer:

Step-by-step explanation:

Given

Circumference = 28 meters

2 $\pi r$ = 28

2 * 3.14 * r = 28

r = 28 /6.28

Therefore r = 4.5 meter

vladimir1956 [14]4 years ago

5 0

<h2>Answer:</h2>

Circumference of the circle = 28 m

Circumference (formula) = 2πr

Thus,

$\sf{2\pi r = 28 \: m }$

$\sf{ \frac{44r}{7} = 28 \: m }$

$\sf{r \: = \frac{28 \times 7}{44} \: m }$

After solving ,

$\sf{r = \frac{49}{11} \: m}$

After converting into mixed fraction,

$\sf{r = 4 \frac{5}{11} \: m \: }$

Note 1 : If we want to write our answer is decimal form , we can write it as 4.45 m but this answer will be approximate.
Note 2 : If we want to consider π as 3.14 then the answer will be a bit different but when we take it as 22/7 the answer is closer to the exact one.

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