All categories

3 years ago

What is the sector with a central angle of 185 degrees and a diameter of 6.4 m? Round to the nearest tenth.

2 answers:

6 0

The area of a sector is
$A=\frac{1}{2}r^2\theta =\frac{1}{2}\left(3.2\:m\right)^2\left(185\cdot \frac{\pi }{180}\right)=16.5\:m^2$

The answer is 16.5 square meters.

Greeley [361]3 years ago

5 0

Geometry B Unit 5: Area - Lesson 10: Area Unit Test

1. What is the area of the trapezoid? The diagram is not drawn to scale.

72 cm^2

2. Given the regular polygon, what is the measure of each numbered angle?

m∡1 = 36°; m∡2 = 72°

3. What are a) the ratio of the perimeters and b) the ratio of the areas of the larger figure to the smaller figure? The figures are not drawn to scale.

5/2 and 25/4

4. What is the area of a regular pentagon with a side of 12 in.? Round the answer to the nearest tenth.

247.7 in.2

5. Name the minor arc and find its measure.

AB; 162°

6. What is the circumference of the given circle in terms of pi_symbol?

28pi in.

7. What is the area of the given circle in terms of pi?

10.89pi m^2

8. What is the area of a sector with a central angle of 185° and a diameter of 6.4 m? Round the answer to the nearest tenth.

16.5 m^2

9. What is the area of the shaded region in the given circle in terms of pi_symbol and in simplest form?

(270 pi + 81 Root 3) m^2

You might be interested in

Please help! PLSSS! Its for a math test.

Maslowich

Answer:

330(D)

Step-by-step explanation:

So lets go over what we know:

#1: 44 out of 80 people think they have a average fitness level.

#2: 80 out of the 600 people in the school were surveyed.

Using what we know, lets try and find the answer.

So lets divide the total amount of people, by the amount of people that took the survey:

600/80

7.5

Ok, so now we know that we need to take 7.5 surveys to find out what all the students think of their fitness level.

Now lets take teh amount of people in a single survey, with average fitness(44), and multpliy it by how many surveys are needed for the whole school(7.5):

44*7.5

330

This is the amount of people in the whole school who think they have an average fitness level.

I hope this helps! :)

Answer:

330

8 0

3 years ago

Jon's coin collection consists of quarters, dimes and nickels. If the ratio of quarters to dimes is 5:2, and the ratio of dimes

Margarita [4]

Answer:

The ratio of quarters to nickels is:

15:8

Step-by-step explanation:

To solve the exercise, you must first consider how big is the ratio of each one to the other, when it is mentioned that the ratio of quarters to dimes is 5:2 it means that for every 5 quarters, Jon has 2 dimes, for the more quarters there are with respect to the dimes, we simply divide the larger value by the smaller:

5/2 = 2.5

Thus, we know that there are 2.5 more quarters than dimes. Now the following proportion: the ratio of dimes to nickels is 3:4, which means that for every 3 dimes there are 4 nickels, as the nickels are greater in quantity, we are going to see how many times they are greater in proportion than the dimes making again a division of the major over the minor:

4/3 = 1.33333333333 (we are going to use the fractional number so as not to lose decimals).

As we can see, the nickels are a little more than 1 with respect to the dimes, now we are going to create two formulas with those values:

q = 2.5d
n = 4/3 d

Where:

q = quarters
d = dimes
n = nickels

As you see. We only express the calculated proportions, at first glance you can identify that the number of quarters is greater, but to know how much greater with respect to nickels we are going to divide the two values that accompany "d" in the formulas:

2.5 / (4/3) = 15/8

If we express it in ratio as it is in the exercise, we obtain:

15:8

So, 15:8 is the ratio of quarters to nickels, which means that for every 15 quarters, jon has 8 nickels.

8 0

3 years ago

Statistics would not be useful if they were not presented with 100% certainty. T/F

ExtremeBDS [4]

Answer: False

Nothing is 100% certain no matter how sure it seems. This is especially true with statistics. There's always going to be some amount of error. The goal is to minimize the error as much as possible in the best cost-effective manner.

7 0

3 years ago

Solve the inequality. -5-3x 2(10+2x) + 3 The solution is

Alekssandra [29.7K]

Answer:

x<=-4

.............................................

7 0

3 years ago

Read 2 more answers

3/8 + 4/8 = ? please help

maksim [4K]