All categories

3 years ago

If a circle has a diameter of 30 meters, which expression gives its area in square meters?

2 answers:

8 0

Area of a circle is given by $\pi r^{2}$ where $r$ is the radius

Radius of a circle is half of the diameter

We have the diameter 30 meters, so the radius is 30÷2=15 meters

Area of the circle = $\pi (15)^{2}$

Note: The option given doesn't show the $\pi$ symbol but it seems like the correct answer is option A

Mamont248 [21]3 years ago

3 0

Answer:

A.15^2 x Ï€ (APEX)

Step-by-step explanation:

You might be interested in

Write each percent as a fraction in simplest form and as a decimal to the nearest hundredth.

Vladimir79 [104]

$p\%=\dfrac{p}{100}=p:100$

$1.\ 30\%=\dfrac{30}{100}=\dfrac{3}{10}\\\\30\%=30:100=0.3\\\\2.\ 42\%=\dfrac{42}{100}=\dfrac{42:2}{100:2}=\dfrac{21}{50}\\\\42\%=42:100=0.42\\\\3.\ 18\%=\dfrac{18}{100}=\dfrac{18:2}{100:2}=\dfrac{9}{50}\\\\18\%=18:100=0.18$

$4.\ 35\%=\dfrac{35}{100}=\dfrac{35:5}{100:5}=\dfrac{7}{20}\\\\35\%=35:100=0.35\\\\5.\ 100\%=\dfrac{100}{100}=\dfrac{1}{1}=1\\\\100\%=100:100=1.0\\\\6.\ 29\%=\dfrac{29}{100}\\\\29\%=29:100=0.29$

$7.\ 56\%=\dfrac{56}{100}=\dfrac{56:4}{100:4}=\dfrac{14}{25}\\\\56\%=56:100=0.56\\\\8.\ 66\dfrac{2}{3}\%=\dfrac{66\cdot3+2}{3}\%=\dfrac{200}{3}\%\\\\\dfrac{200}{3}\%=\dfrac{\frac{200}{3}}{100}=\dfrac{200}{3\cdot100}=\dfrac{2}{3}\\\\\dfrac{200}{3}\%=\dfrac{200}{3}:100=66.666...:100=0.666...\approx0.67\\\\9.\ 25\%=\dfrac{25}{100}=\dfrac{25:25}{100:25}=\dfrac{1}{4}\\\\25\%=25:100=0.25$

4 0

3 years ago

What is the square root of 0.16

CaHeK987 [17]

0.542884
hope it helps!

8 0

4 years ago

George ran 1000 yards in gym class. how many kilometers did he run?

Sliva [168]

He ran 7 kilometers.

5 0

3 years ago

I need help plz help me

topjm [15]

I havent done this kind of math in a long time so i might be a little rusty

3 0

4 years ago

During a promotional weekend, a clothing store gives a $50 gift card to every 75th person who enters the store. On Sunday, there

jeka57 [31]

<h2>Hello!</h2>

The answer is: 34 persons received the $50 gift card.

If we need to know how many many people received a $50 gift card over the two days (Sunday and Monday) we need to divide the total attendance by the number 75 because every 75 persons, there is a $50 gift card.

So, calculating we have:

$TotalAttendance=SundayAttendance+MondayAttendance\\TotalAttendance=1030+1562=2592$

Then, dividing the total attendance by 75 to know how many people received a $50 gift card over the two days, we have:

$ReceivedGiftCards=\frac{2592}{75}=34.6$

Hence, rounding to the nearest whole number, 34 persons received the $50 gift card.

Have a nice day!

4 0

3 years ago