Respuesta :

VectorFundament120

Answer:

Area: 531 in²

Circumference: 82 in

Step-by-step explanation:

Given:

  • radius = 13 inches
  • π = 3.14
  • round to nearest whole number

To find:

  • Area
  • Circumference

Area of Circle:

[tex]\displaystyle \large{A=\pi r^2}[/tex]

  • A = area

Therefore:

[tex]\displaystyle \large{A=3.14 \cdot 13^2}\\\displaystyle \large{A=530.66 }[/tex]

Round to nearest whole number:

  • If the digit is at least or greater than 5, round to 1.
  • If the digit is less than 5, don’t do anything.

Therefore, the area is 531 inches squared

Circumference of Circle:

[tex]\displaystyle \large{C=2\pi r}[/tex]

  • C = circumference

Therefore:

[tex]\displaystyle \large{C=2\cdot 3.14 \cdot 13}\\\displaystyle \large{C=81.64}[/tex]

Round to nearest whole number:

Hence, the circumference is 82 inches

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