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3241004551 [841]
3 years ago
7

x is the radius of the circle if the diameter is decreased by two units then write the perimeter of circle in the form of x ​

Mathematics
1 answer:
Paha777 [63]3 years ago
5 0

Answer:

C = \pi (2x -2)

Step-by-step explanation:

The perimeter of a circle is the circumference of the circle. To find it, use the formula C = \pi d.

The diameter here is two times the radius x, d = 2x. But here it has been decreased by 2 so it becomes d = 2x - 2.

Substitute into the formula.

C = \pi (2x -2)

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in 2013 January there were 360 pupils in school the ratio of boots to girls was 5:4 in February 18 boys were admitted in school
anyanavicka [17]

Answer:

218

Step-by-step explanation:

this is ratio.

5+4=9. which is the ratio you add it.

5/9×360=200

therefore the number of boys in school during 2013 january is 200 plus admitted boys in February is 200+18=218.

therefore the number of boys in school from january to february is 218.

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answer
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