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elena-s [515]
4 years ago
6

Click for question !!!!!!!!

Mathematics
1 answer:
kotegsom [21]4 years ago
3 0
Divide both sides by 4pi, then take the square root of both sides. You will not get an actual value, but the answer should be
\sqrt{ \frac{a}{4\pi} }
You might be interested in
What is the smallest and largest perimeter of a polygon with an area of 20?
DENIUS [597]

Answer:

The polygon with the smallest perimeter is the megagon

The polygon with the largest perimeter is the triangle

Step-by-step explanation:

An equilateral triangle with area = 20 has

0.5× a²×sin60 = 20

a= 6.796

Hence, perimeter = 20.39

A square of area 20 has perimeter= 4×√20 = 17.9

A regular pentagon of area = 20 has perimeter = 3.41 × 5 = 17.05

Hence as the number of sides is increasing, the ratio of the Area to the Perimeter also increases

Therefore, a triangle has the largest perimeter with an area of 20 while a megagon with a million sides has the smallest perimeter with an area of 20.

4 0
3 years ago
What is the difference in area covered by a single 3 inch windshield wiper operating with a central angle of 138 degrees compare
Elena-2011 [213]

Answer:

38.9 square inches.

Step-by-step explanation:

We are asked to find the difference in area covered by a single 3 inch windshield wiper operating with a central angle of 138 degrees compared to a pair of 5 inch wipers operating together each having a central angle of 114 degrees.

We will use area of sector formula to solve our given problem as:

\text{Area of sector}=\frac{\theta}{360}\times \pi r^2, where, r represents radius and theta represents central angle.

Let us find area of sector with central angle 140 degree and radius 3 inch.

\text{Area of sector}=\frac{138}{360}\times \pi (3)^2

\text{Area of sector}=\frac{138}{360}\times 9\pi

\text{Area of sector}=10.83849

Now, we will find area of sector with central angle 114 degree and radius 5 inch and multiply by 2 as:

\text{Area of sector}=2(\frac{114}{360}\times \pi (5)^2)

\text{Area of sector}=2(\frac{114}{360}\times 25\pi)

\text{Area of sector}=\frac{114}{360}\times 50\pi

\text{Area of sector}=49.74188

Let us find difference of area as shown below:

\text{Difference of areas}=49.74188-10.83849

\text{Difference of areas}=38.90339

\text{Difference of areas}\approx 38.9

Therefore, the difference in area covered is approximately 38.9 square inches.

8 0
3 years ago
Cobly has 20 jars if he buys 5 more how many jars would he have
Sunny_sXe [5.5K]

Colby would have 25 jars

20 + 5 = 25

You're welcome ;)

8 0
2 years ago
Glenda runs 5 miles in 40 minutes. If she continues at the same rate, can she run 14 miles in 120 minutes? Yes? No? Why?​
Delvig [45]

Answer:

yes

Step-by-step explanation:

40 divided by 5 equals 8 and 120 divided by 14 equals 8.5. they are in the same number range.

6 0
3 years ago
The admission fee at an amusement park is $1.50 for children and $6.40 for adults. On a certain day, 286 people entered the park
Elena L [17]

Answer:

Adult= 150 and Children=136

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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