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Dmitry [639]
3 years ago
6

Suppose the radius of a circle is 8 units. What is its circumference?

Mathematics
2 answers:
grandymaker [24]3 years ago
8 0

Answer:

The circumference is 50.265

Step-by-step explanation:

circumference= 2*pi*r

r = radius

2*pi*8 = 50.265

alex41 [277]3 years ago
7 0

Circumference of a circle = 2\pi r

Circumference = 2\pi (8)=16\pi =50.27 approx.

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What is the vertex of the graph y = x^2 + 6x - 5 ?
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Classify this triangle by its sides and angles.
FromTheMoon [43]

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Read 2 more answers
DOES ANYONE KNOW THE ANSWERS TO THESE PROBLEM, PLZ HELP!
Virty [35]

Answer:

Q.1.

Sum of angles of a triangle = 180°

∠A + ∠B + ∠c = 180

(3x - 9) + (4x + 15) + 90 = 180

3x - 9 + 4x + 15 + 90 = 180

7x + 96 = 180

7x = 84

x = 12

∠A = 3x - 9 = 3(12) - 9 = 36 - 9 = 27°

∠B = 4x + 15 = 4(12) + 15 = 48 + 15 = 63°

∠A = 27°

∠B = 63°

Q.2.

using \ pythagoras \ theorem \\x^2 = 7^2 + (7\sqrt{3} )^{2} = 49  + 49(3) = 196\\x = \sqrt{196}  = 14

sin y = \frac{opposite}{hypotenuse} = \frac{7\sqrt{3} }{14}   = \frac{\sqrt{3} }{2} \\\\y = sin^{-1} (\frac{\sqrt{3} }{2} ) = 60

x = 14

y = 60°

8 0
2 years ago
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