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Nady [450]
3 years ago
12

Please help me please help me if you don't know gently move your hand

Mathematics
2 answers:
SVEN [57.7K]3 years ago
5 0

Answer:

Radius: <u>7 cm</u>

Diameter: <u>14 cm</u>

Circumference Formula: <u>c = </u><em><u>dπ</u></em><u> or c = 2rπ</u>

Circumference Value: <u>c = 14π or c = 2(7π)</u>

Step-by-step explanation:

We are given that the <u>radius</u> of the circle is <u>7 cm</u>. The diameter will always be twice as large as the radius so that will lead us to <u>14 cm</u> as the <u>diameter</u> of the circle. The formula is quite simple. There are <u>two different types of formulas</u> for <u>finding the circumference of a circle</u>. If only the <u>diameter is given</u>, then we use the formula <u>c = </u><em><u>dπ</u></em>, where d is for diameter and π is for pi or 3.14159. If only the <u>radius is given</u>, then we use the formula <u>c = 2rπ</u>, where r is for radius and π is for pi or 3.14159. In this case, we are going to use the formula for radius since only the radius is given. Simply plug in the value for radius then multiply the radius to π or 3.14159 and multiply the product by 2 to get the circumference of the circle. If I am wrong, please let me know. I hope this helps! :D

Anna11 [10]3 years ago
4 0

Answer:

7cm

14cm

dπ or 2r π

14π or 2(7π)

Step-by-step explanation:

Radius = 7cm

Diameter = 7 x 2 = 14cm

Circumference = 2 x π x r = dπ

Circumference Value = 2 x π x 7 = 14π

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