All categories

3 years ago

The radius of a semicircle is 3 centimeters. What is the semicircle's area?

Mathematics

1 answer:

topjm [15]3 years ago

6 0

Answer:

$A = \frac{9}{2} \pi\ cm^{2}$

Step-by-step explanation:

Area of a full circle is $r^{2} \pi$ .

Area of a semicircle is exactly half of it: $\frac{1}{2} r^{2} \pi$ .

$A = \frac{1}{2} 3^{2} \pi = \frac{9}{2} \pi = 14.137\ cm^{2}$

You might be interested in

What is 5 divided by 25

disa [49]

Answer:

0.2

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Find the probability of rolling a sum of 3.

yarga [219]

Answer:

robability formula is the ratio of number of favorable outcomes to the total number of possible outcomes. Measures the likelihood of an event in the following way: - If P(A) > P(B) then event A is more likely to occur than event B. - If P(A) = P(B) then events A and B are equally likely to occur.

Step-by-step explanation:

6 0

3 years ago

Aiden and Haisem are going to eat the same amount of hamburgers and fries, but from different restaurants. Aiden goes to Burger

Paha777 [63]

Answer:

the burgers be 3 and fries be 2

Step-by-step explanation:

The computation is shown below:

Let us assume burgers be x

And, the fries be y

Now according to the questiojn

1.25x + 0.50y = $4.75

1.50x + 0.99y = $6.48

Now multiply by 1.2 in the first equation

1.50x + 0.6y = $5.70

1.50x + 0.99y = $6.48

-0.39y = -0.78

y = 2

Now put the value of y in any of the above equation

1.25x + 0.50(2) = $4.75

x = 3

Hence, the burgers be 3 and fries be 2

6 0

3 years ago

You select a marble without looking and then put it back. If you do this 3 times, what is the best prediction possible for the n

GenaCL600 [577]

Answer:

1 out of 3 times more likley but

Step-by-step explanation:

4 0

2 years ago

3 connecting lines are shown. Line D F is horizontal. Line D E is about half the length of line D F. Line F E is about one-third

mars1129 [50]

The inequality that explains why the three segments cannot be used to construct a triangle is ED + EF < DF

<h3>Inequalities </h3>

From the question, we are to determine which of the given inequalities explains why the three segments cannot be used to construct a triangle

From the given information,

Line DE is about half the length of line DF

That is,

ED = 1/2 DF

Also,

Line FE is about one-third of the length of line DF

That is,

EF = 1/3 DF

Then, we can write that

ED + EF = 1/2DF + 1/3DF

ED + EF = 5/6 DF

Since,

5/6 DF < DF

Then,

ED + EF < DF

Hence, the inequality that explains why the three segments cannot be used to construct a triangle is ED + EF < DF

Learn more on Inequalities here: brainly.com/question/1447311

#SPJ1

5 0

2 years ago