All categories

2 years ago

What is the diameter of a circular field whose area is 616cm^2

Mathematics

2 answers:

lubasha [3.4K]2 years ago

4 0

Answer:

Step-by-step explanation:

area of a circle

$\pi{r}^{2}$

616=3•142×r×r

616/3•142=r^2

196=r^2

r=√196

r=14

d=2r

d=2×14

d=28

Oksana_A [137]2 years ago

3 0

Answer:

Step-by-step explanation:

$d=2\sqrt{\frac{A}{\pi}} =2\sqrt{\frac{616}{\pi} }$ ≈ $28.00563cm$

rounding 28.00563 to 28.

So hence, your answer is 28cm

-------------------------------------------------------------------------------------------------------------The beautiful thing about learning is that no one can take it away from you!

B.B.King

Thanks!

Have a great day!

~ms115~

You might be interested in

Please simplify with a explanation!~

PilotLPTM [1.2K]

Answer:

-4y + 20

Step-by-step explanation:

4(-y+5)

What we need to do here is get rid of the parentheses, which can be achieved through multiplication.

This is another way of saying 4 times -y plus 4 times 5.

Let's break the the parentheses down into 2 separate formulas.

4(-y) and 4(5)

Now we can multiply these two together to get -4y and +20. When combined, we get -4y +20.

6 0

2 years ago

Tell whether x and y are proportional when y/x=7

77julia77 [94]

Answer:

Is there any more to this question?

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles. She can ride 9 mph faster than she can walk. How f

Marrrta [24]

Answer:

$\frac{48}{r+9}=\frac{12}{r}$

Step-by-step explanation:

Let r represent Linda's walking rate.

We have been given that Linda can ride 9 mph faster than she can walk, so Linda's bike riding rate would be $t+9$ miles per hour.

$\text{Time}=\frac{\text{Distance}}{\text{Rate}}$

We have been given that Linda can bicycle 48 miles in the same time as it takes her to walk 12 miles.

$\text{Time while riding}=\frac{48}{r+9}$

$\text{Time taken while walking}=\frac{12}{r}$

Since both times are equal, so we will get:

$\frac{48}{r+9}=\frac{12}{r}$

Therefore, the equation $\frac{48}{r+9}=\frac{12}{r}$ can be used to solve the rates for given problem.

Cross multiply:

$48r=12r+108$

$48r-12r=12r-12r+108$

$36r=108$

$\frac{36r}{36}=\frac{108}{36}$

$r=3$

Therefore, Linda's walking at a rate of 3 miles per hour.

Linda's bike riding rate would be $t+9\Rightarrow 3+9=12$ miles per hour.

Therefore, Linda's riding the bike at a rate of 12 miles per hour.

7 0

3 years ago

30 students in class 1/5 absent how many students were in class

slava [35]

6 students were in class because the 5 represents on how many groups you need to have

3 0

3 years ago

There is a line whose y-intercept is 7 and whose slope is 8. What is its equation in slope-intercept form?

Annette [7]

Answer:
y = 8x + 7

Explanation:
The equation of the line in slope-intercept form has the following general formula:
y = mx + c
where:
m is the slope of the line = 8
c is the y-intercept = 7

Substitute with the givens in the above formula to get the slope of the line as follows:
y = mx + c
y = 8x + 7

Hope this helps :)

4 0

2 years ago

What is the diameter of a circular field whose area is 616cm^2​

What is the diameter of a circular field whose area is 616cm^2