All categories

2 years ago

A circle has a circumference of 45 cm. What is the BEST estimate of the circle’s diameter?

Mathematics

2 answers:

ch4aika [34]2 years ago

8 0

Answer:

C) 15 cm is the best estimate.

Step-by-step explanation:

The exact answer is not there, so 15 is the best estimate.

You can use this equation to help you:

d=C/π

Where d is the diameter.

C is the circumference.

And the last one is Pi.

You know that C = 45, so divide that by Pi (3.14).

45/3.14159 = 14.32

The closest answer is 15.

Hope this helps! Have a great day!

svetoff [14.1K]2 years ago

4 0

Answer:

The best estimate of the circle's diameter is 15cm.

Step-by-step explanation:

Circumference = 2πr = 45cm
=> 2 x π x r = 45 cm
=> 2 x 22/7 x r = 45 cm
=> 44/7 x r = 45
=> 44r/7 = 45
=> 44r = 315
=> r = 7.16 (Rounded)
=> Dia. = 7.16 x 2
=> Dia. = 14.32
=> Dia. ≈ 15 cm

Conclusion:

Therefore, the best estimate of the circle's diameter is 15cm.

Hoped this helped.

$BrainiacUser1357$

You might be interested in

Determine the points of intersection of the given functions. y = –x2 + 3x + 20 y = –2x + 15 Describe the features of the graphin

Tanzania [10]

After you type in your equations and hit graph you notice that, if you are in the standard window, your parabola is cut off so you have to choose your "window" button to change the viewing window to see the whole graph. Then you would use your 2nd button and "trace" and "intersect" to find the points of intersection of the 2 graphs. The first point is at (-.90901, 16.81812) and the second point is at (5.9090909, 3.1818182). Graphing calculators are quite amazing!

5 0

3 years ago

Read 2 more answers

Do circumstance of a circle with 17ft

olchik [2.2K]

Answer:

The circumference and area of a circle with a 17 ft diameter are:

C = 53.4 ft

A = 227 ft2

5 0

3 years ago

The pressure applied to a leverage bar varies inversely as the distance from the object. If 150 pounds is required for a distanc

AlexFokin [52]

Answer:

500 pounds

Step-by-step explanation:

Let the pressure applied to the leverage bar be represented by p

Let the distance from the object be represented by d.

The pressure applied to a leverage bar varies inversely as the distance from the object.

Written mathematically, we have:

$p \propto \dfrac{1}{d}$

Introducing the constant of proportionality

$p = \dfrac{k}{d}$

If 150 pounds is required for a distance of 10 inches from the object

p=150 pounds
d=10 inches

$150 = \dfrac{k}{10}\\\\k=1500$

Therefore, the relationship between p and d is:

$p = \dfrac{1500}{d}$

When d=3 Inches

$p = \dfrac{1500}{3}\\\implies p=500$ pounds$

The pressure applied when the distance is 3 inches is 500 pounds.

4 0

3 years ago

JONAS HAS A FILE CABINET IN THE SHAPE OF A right rectangular prism. the area of the base of the file cabinet is 450 square inche

Nostrana [21]

The volume of a rectangular prism can be found by the formula:
V = A × h

Where:
A = area of the base of the prism
h = height of the prism

Therefore:
V = 450 × 53
= 23850 in³

The volume of the file cabinet is 23850 in³.

4 0

3 years ago

Read 2 more answers

Pay!ng someone to do my math exam! If you’re down contact me on my !nsta kiara.c1

dimaraw [331]

How much we talking like 20 dollars or something

3 0

2 years ago