A circle its circumference is 75 cm calculate its surface area
[tex]\pi= \frac{22}{7 \: } \: or \: 3.14[/tex]

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30-03-2018
Mathematics

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A circle its circumference is 75 cm calculate its surface area
[tex]\pi= \frac{22}{7 \: } \: or \: 3.14[/tex]

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Аноним Аноним · Answer 1 · 2018-03-30T15:37:40+02:00

Circumference = πD

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Given that the circumference is 75cm, find Diameter:
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πD = 75
D = 75 ÷ 3.14
D = 23,89 cm

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Find Radius:
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Radius = Diameter ÷ 2
Radius = 23.89 ÷ 2
Radius = 11.94 cm

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Find Surface Area:
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Area = πr²
Area = 3.14 x 11.94²
Area = 447.65 cm²

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Answer: 447.65cm²
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A circle its circumference is 75 cm calculate its surface area [tex]\pi= \frac{22}{7 \: } \: or \: 3.14[/tex]

Respuesta :

Otras preguntas

A circle its circumference is 75 cm calculate its surface area
[tex]\pi= \frac{22}{7 \: } \: or \: 3.14[/tex]