1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yan [13]
3 years ago
11

If r is the radius of a circle and d is its diameter, which of the following is an equivalent formula for the circumference C=2π

r?
A. C=2πd
B. C=πD
C. C=πr2
D. C=πdr
Mathematics
2 answers:
zaharov [31]3 years ago
6 0

Answer:

Option B is correct

C=πD

Step-by-step explanation:

As per the statement:

If r is the radius of a circle and D is its diameter.

Given the circumference of the circle:

C = 2 \pi r             .....[1]

where,

r is the radius of the circle.

We know that:

diameter(D) = 2r

Substitute in [1] we have;

C = \pi (2r) = \pi D

Therefore, the equivalent formula for the circumference C=2πr is, C=πD

Ahat [919]3 years ago
5 0
The answer is B.<span> C=πD </span>
You might be interested in
In which measurement situations would the most appropriate unit of measurement be feet?
nikklg [1K]
The answer would be the distances that are not too large and not too small

A.legnth and width of a ball room
this would work because the next measurement is 1  mils and ball rooms are not that big


B. width of an eyelash. that is rediculously small so this is wrong

C. distanc from chicaco to san fransisco
way too far, use miles

D. height of a door
corect, door is apout 8 feet aprox


answer is A and D
5 0
3 years ago
Please help will mark BRAINLIEST!!!
stiks02 [169]

Answer:

b, c, a

Step-by-step explanation:

In a triangle, the largest angle is opposite the longest side. The smallest angle is opposite the shortest side.

This triangle has 2 given angles, 50° and 60°.

We can find the measure of the third angle, x.

50 + 60 + x = 180

x + 110 = 180

x = 70

The three angles have measures 50°, 60°, and 70°.

The shortest side is opposite the smallest angle. That is side a.

The longest side is opposite the largest angle. That is side b.

The order from longest to shortest is

b, c, a

6 0
3 years ago
A closed container has 5.04 ⋅ 1023 atoms of a gas. Each atom of the gas weighs 1.67 ⋅ 10−24 grams.
MatroZZZ [7]

Answer:

The correct option is the last one (0,84 grams, because (5.04 × 1.67) × (10^23 x 10^-24) = 8.4168 x 10^-1))

Step-by-step explanation:

The first step is to think that you have to multiply the number of atoms for the weight of each atom.

When you work with scientific notation, you should solve the operation for numbers and for the ten base. In this case you solve 5.04 x 1.67 and then the product of the ten bases. For this product you have to sum the exponents of the ten base 23 + (-24) = -1.

Summarizing.... 5.04 x 10^23 x 1.67 x 10^-24 = (5.04 x 1.67) x (10^23x10^-24)  ⇒ 5.04 x 10^23 x 1.67 x 10^-24 = 8.4168 x 10^-1

⇒ 5.04 x 10^23 x 1.67 x 10^-24 = 0,84168.

4 0
3 years ago
PLZ HELP I AM STUCK!
Licemer1 [7]

A. 3 could be the answer

B 12 would be the second answer

8 0
3 years ago
What is the surface area of this triangular prism rounded to the nearest tenth? A) 48.6km2 B) 63.4 km2 C) 72.6 km2 D) 84.4 km2
Mekhanik [1.2K]

Correct option B)63.4km^2 .

<u>Step-by-step explanation:</u>

We have the following figure attached as shown below.

Now, this triangular prism have 2 similar right angled surfaces and 3 rectangular surfaces , Let's calculate area for all of them:

2 similar right angled surfaces

We know that area of triangle = \frac{1}{2} b(h)

⇒ area = \frac{1}{2} b(h)

⇒ area = \frac{1}{2} (3.6)(7.7)

⇒ area = 13.86km^{2}

But there 2 such surfaces so , area = 2(13.86) = 27.72km^2

3 rectangular surfaces

Area of rectangle = length(breadth)

⇒ area_1 = 3.6(1.8)

⇒ area_1 = 6.48km^2

⇒ area_2= 7.7(1.8)

⇒ area_2 = 13.86km^2

⇒ area_3 = 8.5(1.8)

⇒ area_2 = 15.3km^2

Total area =6.48 + 13.86 + 15.3 = 35.64km^2

Adding area of 2 similar right angled surfaces & 3 rectangular surfaces:

Area = 27.72+35.64 = 63.36km^2 = 63.4km^2

Correct option B)63.4km^2 .

4 0
3 years ago
Read 2 more answers
Other questions:
  • What are the positive factors of 54?
    15·1 answer
  • Kermit's favorite iced tea is made with 15 tea bags in every 2 liters of water. Peggy made a 12-liter batch of iced tea with 90
    10·2 answers
  • A, E, and D are collinear. BCDE is a parallelogram. Find m
    9·1 answer
  • Which of these sequences is a geometric sequence?
    7·2 answers
  • Formula for finding the line of symmetry of a quadratic function?
    10·2 answers
  • What is the measure of the greatest angle of a triangle if the side lengths are 21m, 23m, and 25m
    7·1 answer
  • Help... (look, there is a picture)
    11·1 answer
  • Which statements are true for the functions g(x) = x2 and h(x) = –x2 ? Check all that apply. For any value of x, g(x) will alway
    14·1 answer
  • Is 1/2 √9 *√4 rational or irrational​
    7·1 answer
  • What is the birthday polynomial for 10/1/2006
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!