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Anvisha [2.4K]
3 years ago
9

What is the formula that relates circumference and radius?

Mathematics
2 answers:
mixas84 [53]3 years ago
7 0

Yeah what he said I think

posledela3 years ago
3 0

C=2•pi•r because C= pi•d and d=2•r

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Plz help..............
Amanda [17]
The Answer is B. Because 2X2=4x2=8
5 0
3 years ago
Hey! im confused on this. ill give more points if you end up being correct :)
Svetlanka [38]

Answer:

A

Step-by-step explanation:

5 0
3 years ago
Chad drove 168 miles in 3 hours. How many miles per hour did chad drive? Chad will drive 672 more miles. He continues to drive a
larisa86 [58]

168/3 = 56

<em>Therefore, Chad is driving the car in 56 mph.</em>

672/56 = 12

<em>Therefore, Chad drives 672 miles in 12 hours.</em>

308/11 = 28

<em>Therefore, Chad drives 28 miles per gallon of gas.</em>

672/28 = 24

<em>Therefore, Chad uses 24 gallons of gas to drive 672 miles.</em>

3 0
3 years ago
Elliott is standing at the top of a store escalator that leads to the ground floor below. the angle of depression from the top o
erma4kov [3.2K]

By using what we know about right triangles, we conclude that the height is 11ft.

<h3>How far is the top of the escalator from the ground floor? </h3>

We can think of this as a right triangle.

Where the length of the escalator is the hypotenuse

We know that the angle of depression is 42.51°, then the top angle of our right triangle is:

90° - 42.51° = 47.49°

Now, the height of the top of the escalator would be the adjacent cathetus to said angle, then we can use the relation:

cos(a) = (adjacent cathetus)/(hypotenuse)

Replacing what we know:

cos(47.49°)  = height/16ft

cos(47.49°) *16ft = height = 10.8ft

Rounding to the nearest foot, we get:

height = 11ft

If you want to learn more about right triangles:

brainly.com/question/2217700

#SPJ1

4 0
2 years ago
Find a whole number x in x/113 so that the ratio is a good estimate for pi
NISA [10]
So the initial question is x / 113 = 3.14 (we're keeping it a smaller decimal for now)

What you should do first is multiply both sides by 113

Your answer should be x = 354.82

Round this up to x = 355. <-- This is why we only used 3.14 at the start

Now check your work:
x / 113 = ?
355 / 113 = 3.14159265358979... which essentially is pi
4 0
3 years ago
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