2 answers:
Circumference of a circle - derivation This page describes how to derive the formula for the circumference of a circle. Recall that the definition of pi (π) is the circumference c of any circle divided by its diameter d. Put as an equation, pi is defined as π = c d Rearranging this to solve for c we get c = π d The diameter of a circle is twice its radius, so substituting 2r for d c = 2 π r If you know the area Recall that the area of a circle is given by area = π r 2 Solving this for r r 2 = a π So r = √ a π The circumference c of a circle is c = 2 π r
Answer:
4.) Find the length of the diameter and the length of the circumference of the circle. Divide the length of the circumference by the length of the diameter. Set up an equation showing the ratio of the circumference to the diameter equal to π . Then rearrange the equation by solving it for the circumference. Substitute 2 times the radius for the diameter.
Step-by-step explanation:
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A) (-3,-4) b) -3 c) (0,-4) d) mini = (-4,infinity) e) (-1,0) and (-5,0)
Answer:
Korea = 15
Italy = 16
France = 17
Step-by-step explanation:
Let :
Korea = x
Italy = x + 1
France = x + 2
(since the values are consecutive)
x + x + 1 + x + 2 = 48
3x + 3 = 48
3x = 48 - 3
3x = 45
x = 45 / 3
x = 15
Korea = x = 15
Italy = x + 1 = 16
France = x + 2 = 17
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As here < sign present line will be dashed and shading should be done below the line
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Graph attached
100 centimeters is equal a meter so you can say 345 centimetres is the same as 3,45 metres i hope i helped you somehow