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8090 [49]
3 years ago
5

If the radius of a circle proportional to the circumference of the circle. Justify your answer. If the radius of a circle is 18

miles 1. what is the measure of the diameter. 2. what is the measure of the circumference, exactly in terms of pi. 3. what is approximate measure of the circumference, to the nearest tenth of a mile.
Mathematics
2 answers:
postnew [5]3 years ago
6 0

circumference of a circle (C)

C = πd or 2πr ( because d 2 x r)

r= 18 miles given

d= diameter

r= radius

d = 2 x r

d = 2 x 18 = 36 miles

2) C = πd

C = 3.14 x 36 = 113.04 miles

3) approximate measure of C = 22/7 x 36= 113.14 miles

Mazyrski [523]3 years ago
5 0

Answer:

113.14

Step-by-step explanation:

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Distribute the Negative Sign:

= 3x^2+2x−3+−1(4x^2−8x+23)

= 3x^2+2x+−3+−1(4x^2)+−1(−8x)+(−1)(23)

= 3x^2+2x+−3+−4x^2+8x+−23

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= (3x^2+−4x^2)+(2x+8x)+(−3+−23)

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−x^2+10x−26

6: Distribute the Negative Sign:

= −13n^2−3n−6n^4+−1(13n^2+11n−2n^4)

= −13n^2+−3n+−6n^4+−1(13n^2)+−1(11n)+−1(−2n^4)

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Combine Like Terms:

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=−4n^4−26n^2−14n

7: and in math means to add

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adell [148]

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The goal is to get 3/4 into an equivalent fraction that has 28 as the denominator.

------------------------------------

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