Ask question

Ask question

All categories

2 years ago

15

If the diameter of a circle is 9 cm, then its circumference is 56.52 cm.?????

2 answers:

Tems11 [23]2 years ago

5 0

No the circumference of the circle is not 56.52. According to the formula which is pi x diameter all you have to do is multiply 9 times pi which is 3.14. This would equal 28.26cm, not 56.52cm.

IRISSAK [1]2 years ago

3 0

Circumference if the circle=
2πr or πd
Substitute the diameter=9cm into second equation
C=9π
C≈9×3.14
C≈28.26 cm. As a result, it is false that the circumference will be 56.52 cm if the diameter eqaul 9 cm. Hope it help!

You might be interested in

grin007 [14]

Answer:

The answer is 11.2 cm

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The net of a prism is shown below.

Sliva [168]

Answer:

nothing is there

Step-by-step explanation:

7 0

2 years ago

a college student needs 11 classes that are worth a total of 40 credits in order to complete her degree. The college offers both

Rasek [7]

I’m not entirely sure but I think it’s D

8 0

2 years ago

Jason puts $30 worth of gas in his truck. The price per gallon was $2.50. Which equation can be solved to find the number of gal

tankabanditka [31]

So, this is a rate problem, so the forumla we would get is

2.5g=30

(Note this is not one of the choices), so if we look, there is an equivelent equation.

If we divide both sides by g we get

2.5=30/g

B is the correct answer

8 0

3 years ago

What is the value of c in the equation y = 4x^2 -10x + c if the y-coordinate of the vertex is -7

love history [14]

Answer: $c=-\frac{3}{4}$

Step-by-step explanation:

Find the x-coordinate of the vertex with this formula:

$x=\frac{-b}{2a}$

In this case:

$a=4\\b=-10$

Substituting values, we get:

$x=\frac{-(-10)}{2(4)}=\frac{5}{4}$

Now we can substitute the coordinates of the vertex into the equation $y = 4x^2 -10x + c$ and then solve for "c".

Then:

$-7 = 4(\frac{5}{4})^2 -10(\frac{5}{4}) + c\\\\-7+\frac{25}{4}=c\\\\c=-\frac{3}{4}$

6 0

3 years ago