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
kirza4 [7]
2 years ago
9

The length of the arc of this semi-circle is 70m. What is the length of the radius?

Mathematics
1 answer:
anzhelika [568]2 years ago
7 0

Answer:

r = 22.3m circa

Step-by-step explanation:

We know that the perimeter of a circle can be calculated as follows:

p = 2\pir

So half of perimeter will be:

p/2 = \pir

We know that p/s = 70m, therefore:

r = 70m /\pi \\ = 22.3 m circa.

You might be interested in
Two numbers have the same digits in the millions period, The same digits in the thousands period, and the same digits in the one
hjlf
Not unless the digits in each period are also in the same order. That is, the digit in each PLACE must be the same.
5 0
3 years ago
The Bermuda Triangle is roughly defined by Hamilton, Bermuda; San Juan, Puerto Rico; and Fort Lauderdale, Florida. The distances
zloy xaker [14]

Answer:

442554 square miles

Step-by-step explanation:

The area of a triangle is given by :

0.5*A*B*Sin(∅) where A and B are two sides and ∅ is the angle between them.

We will find ∅ by applying cosine rule:

c^2 = a^2 + b^2 − 2ab cos(∅)

Where ∅ is angle between sides a and b.

In this example:

a=1028, b=1046, c= 965

Plugging in the values, we get ∅=55.4°

Applying the formula for Area:

0.5*A*B*Sin(∅)

0.5*1028*1046*Sin(55.4)= 442554 square miles

8 0
3 years ago
If sin 115° ≈ 0.91 and cos 115° = -0.42, then sin -115° =
EastWind [94]

Answer:

sin -115° = -0.91

Step-by-step explanation:

Point A is (cos 115°, sin 115°). Since cos 115° = -0.42 and sin 115° ≈ 0.91, it means that the coordinates at point A is (-0.42, 0.91).

As for point B which was revolved around -115°,

the coordinates will be similar to point A but you just have to change the negative.

B(cos -115°, sin -115°) = B(0.42, -0.91)

3 0
3 years ago
State whether the following is perpendicular or parallel y=(1/2)×y=-2×+9​
Rom4ik [11]

Answer:

parallel!

Step-by-step explanation:

if you insert the equation into demos there parallel

3 0
2 years ago
Please explain how you got your answer also. A class has 21 girls and 12 boys. What is the probability that a boy's name is draw
Tresset [83]
It’s the answer 12 over 33
3 0
3 years ago
Other questions:
  • There are 40 girls and 60 boys in the math club the coach wants to divide the entire club into teams where each team has the sam
    9·1 answer
  • Exponent Laws - difference between product law and product raised to a power (with formula please)
    10·1 answer
  • Simply the problem.
    6·2 answers
  • What is the approximate volume of a cone with a height of 12 in. and radius of 9 in.? Use 3.14 to approximate pi, and express yo
    10·1 answer
  • someone plz help me. with promblems above extrax points. i will mark brainliest the first answer and the one that is expalined
    10·1 answer
  • The fourth term of a sequence is 108. Each term after the first is 3 times the previous term. Write an explicit expression that
    5·1 answer
  • Find the value of x in the figure.
    5·2 answers
  • ILL GIVE YOU BRAINLEST IF RIGHT
    6·2 answers
  • (-2, -1) and (-4, -7)<br> Find the slope of the line that passes through the two given points
    12·2 answers
  • What is meaning of trigonometry ​
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!