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natulia [17]
3 years ago
12

What is pi/π used for in math

Mathematics
2 answers:
vovikov84 [41]3 years ago
8 0

Answer:

In basic mathematics, pi is used to find the area and circumference of a circle. Pi is used to find area by multiplying the radius squared times pi. So, in trying to find the area of a circle with a radius of 3 centimeters, π32 = 28.27 cm.

TEA [102]3 years ago
3 0

Answer:

Succinctly, pi or π is the ratio of the circumference of any circle to the diameter of that circle.

Have A Nice Day!!!!!!

:))))))

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If t = 18 and r = 12, find S. Round to the nearest tenth.
choli [55]

Answer: <em>S</em> ≈ 48.2°

Step-by-step explanation:

   We can use trigonometry functions to solve.

   Looking at angle <em>S</em>, t = 18 is the hypotenuse and r = 12 is the adjacent side. This means we can use the cosine function.

   \displaystyle cos(S) =  \frac{\text{adjacent side}}{\text{hypotenuse }}=\frac{12}{18}

  \displaystyle cos^{-1} (cos(S)) =  (\frac{\text{adjacent side}}{\text{hypotenuse }}=\frac{12}{18})cos^{-1}

  S = 48.189685...\\S  \;$\approx$\; 48.2^{\circ}

3 0
1 year ago
Read 2 more answers
Find the surface area of the prism HURRY HURRY
Assoli18 [71]

Answer:

should be 192

Step-by-step explanation:

4 0
2 years ago
16 &gt; - 8 + x<br><br> A. x &gt; 24<br><br> B. x &lt; 24<br><br> C. x &gt; 8<br><br> D. x &lt; 8
xeze [42]

Answer:

B. x < 24

Step-by-step explanation:

16 > - 8 + x

+8 > +8 + x     Add 8 to both sides

24 > x

Final answer: x < 24

6 0
2 years ago
Question 2 help please
m_a_m_a [10]

Answer:

The measure of the vertex angle is 94 degrees ⇒ A

Step-by-step explanation:

  • In any triangle, the sum of the measures of its interior angle is 180°
  • In the isosceles triangle, the two base angles are equal in measures

∵ In an isosceles triangle, the measure of the base angle = (2x + 5)

∵ The base angles of the isosceles triangles are equal in measures

∴ The measures of the base angles are (2x + 5), (2x + 5)

∵ The measure of the vertex angle = (5x - 1)

∵ The sum of the measure of the three angles = 180°

∴ (2x + 5) + (2x + 5) + (5x - 1) = 180

→ Add the like terms in the left side

∵ (2x + 2x + 5x) + (5 + 5 + -1) = 180

∴ 9x + 9 = 180

→ Subtract 9 from both sides

∴ 9x + 9 - 9 = 180 - 9

∴ 9x = 171

→ Divide both sides by 9 to find x

∴ x = 19

→ Substitute the value of x in the measure of the vertex angle to find it

∵ The measure of the vertex angle = 5x - 1

∴ The measure of the vertex angle = 5(19) - 1

∴ The measure of the vertex angle = 95 - 1

∴ The measure of the vertex angle = 94°

∴ The measure of the vertex angle is 94 degrees

6 0
3 years ago
The local bike shop charges a rental fee of 12$ as was as 4$ per hour to rent a bike if I spent 44$ write an equation to model t
vfiekz [6]

Answer:

8 hours

Step-by-step explanation:

rental fee = 12 + 4/hr

spent = 44

44 = 12+4(hr)

32 = 4(hr)

32/4 = hr

hr = 8

5 0
3 years ago
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