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16-08-2020
Mathematics

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The area of a compact disc is 78.53 square centimeters. What is the radius of the disc? Use pi = 3.14

Respuesta :

16-08-2020

Answer:

r = 5 cm

Step-by-step explanation:

A = πr²

78.53 = (3.14)r²

divide by 3.14

25 = r²

r = ±5

r = 5

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