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01-05-2018
Mathematics

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If my radius is 7.8 maters. What is the circumference and area of my circle

If my radius is 78 maters What is the circumference and area of my circle class=

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Аноним Аноним

01-05-2018

Circumference = 2 · π · r or π · d

Radius = 7.8

7.8 × 2 = 15.6

15.6 × 3.14(π) = 48.984

Circumference = 48.984 rounded = 49

Area = π · r²

Radius = 7.8

7.8 × 7.8 = 60.84

60.84 × 3.14(π) = 191.0376

Area = 191.0376 rounded = 191

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