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[4.8] 1 can find the area of a sector.

48 1 Can Find The Area Of A Sector class=

Answer :

given:

radius= 12 cm

to find:

circumference and area of the circle.

solution:

circumference:

[tex]c = 2\pi \: r[/tex]

[tex]c = 2 \times \pi \times 12[/tex]

[tex]c = 75.39822 \: cm[/tex]

[tex]c = 75.4 \: cm[/tex]

area:

[tex]a = \pi {r}^{2} [/tex]

[tex]a = \pi \times {12}^{2} [/tex]

[tex]a = 452.38934 \: {cm}^{2} [/tex]

[tex]a = 452.39 \: {cm}^{2} [/tex]

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