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3 years ago

Suppose the diameter of a circle is 10. What is its area?

2 answers:

7 0

Well hello again :3. This is also quite simple. The diameter of a circle is 2 times the radius. So we can refit this into the equation and say that our new formula using diameter is $pi(d^2/2)$ . Now we can say that 10/2 is 5 and $5^2$ is 25. Therefore your answer is $25pi$ or 78.54.

KIM [24]3 years ago

6 0

To find area you must use the formula A= pi*radius. So the radius is always 1/2 of the diameter. 10/2 is 5.So your radius is 5. multiply 5 by 3.14, to get the area of 78.54

You might be interested in

Find the number of sides for a regular polygon whose interior angles each measure 10 times each exterior angle

gavmur [86]

Answer:

22 sides

Step-by-step explanation:

The expression to find an interior angle of a polygon is:

$\frac{(n-2)*180}{n}$

The expression to find an exterior angle of a polygon is:

$\frac{360}{n}$

Please note that "n" represents the number of sides the polygon has.

We can use these two expressions to set up an equation.

$\frac{(n-2)*180}{n}=10(\frac{360}{n})$

Multiply both sides by "n":

$(n-2)*180=10n(\frac{360}{n})$

Now, distribute:

$180(n)-180(2)=\frac{3600n}{n}\\180n-360=3600$

Divide both sides by 10:

$\frac{180n}{10}-\frac{360}{10}=\frac{3600}{10}\\$

$18n-36=360$

Add 36 to both sides:

$18n=360+36\\18n=396$

Divide both sides by 18:

$n=22$

The polygon has 22 sides

6 0

3 years ago

Write a linear equation that gives the rule for this table.

klio [65]

Answer:

y=24x

Step-by-step explanation:

(48-24)/(2-1)=24/1

24=24(1)+b

24=24+b

b=0

5 0

4 years ago

A property had a list price of $164,000, an actual sale price of $158,000 and a $124,000 loan. If the transfer fee was $3 per $1

Kryger [21]

Answer:

The fee was $474.

Step-by-step explanation:

Given:

A property had a list price of $164,000, an actual sale price of $158,000 and a $124,000 loan.

If the transfer fee was $3 per $1,000.

Now, to find the fee.

The list price of the property = $164,000.

The sale price of the property = $158,000.

And the amount of loan = $124,000.

As, the transfer fee is based on the sale price of the property.

The transfer fee was $3 per $1,000.

So, let transfer fee be $x$ for $158,000.

If, 3 is equivalent to $1000.$

Then, $x$ is equivalent to 158,000.

Now, to get the fee by using cross multiplication method:

$\frac{3}{1000} =\frac{x}{158000}$

By cross multiplying we get:

$474000=1000x$

Dividing both sides by 1000 we get:

$474=x$

$x=\$474.$

The transfer fee = $474.

Therefore, the fee was $474.

5 0

4 years ago

70. pts

Svetach [21]

2x+6 > -4
trate it as a temporary equals sign
2x+6=-4
subtract 6 rom both sdies
2x=-10
divide both sides by 2
x=-5

put it back
x > -5
so the answer is C

4 0

3 years ago

Read 2 more answers

20 POINTS!!

BARSIC [14]

Answer:

r = 8

Step-by-step explanation:

Given that M is directly proportional to r² then the equation relating them is

M = kr² ← k is the constant of proportionality

To find k use the condition when r = 2 , M = 14

k = $\frac{m}{r^{2} }$ = $\frac{14}{4}$ = $\frac{7}{2}$