rb909761 rb909761
  • 05-04-2021
  • Mathematics
contestada

a) If the perimeter of a circle is 44 cm,
(i) find its radius.
(ii) find its area.​

Respuesta :

Аноним Аноним
  • 30-04-2021

Answer:

[tex]154 \: {cm}^{2} [/tex]

Step-by-step explanation:

Let the radius be = r cm

circumference = 2πr

[tex]44 = 2 \times \frac{22}{7 } \times r[/tex]

[tex]r = \frac{44 \times 7}{44} \times 7[/tex]

[tex]r = 7 \: cm[/tex]

Area of circle =

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

[tex] = \frac{22}{7} \times 7 \times 7[/tex]

[tex] = {154 \: cm}^{2} [/tex]

Hope it is helpful....

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