chukwe chukwe
  • 14-06-2020
  • Mathematics
contestada

calculate the perimeter and area of a circle whose radius is 7cm(22/7
[tex]\pi[/tex]
​

Respuesta :

BrainlyHero
BrainlyHero BrainlyHero
  • 14-06-2020

Given :

  • Radius, r = 7 cm

To find out:

Find the perimeter ( circumference ) and area of the circle?

Formula used:

  • Area of circle = πr²

  • Perimeter of circle = 2πr

Solution:

★ Area of circle = πr²

= 22/7 × 7²

= 22/7 × 49

= 22 × 7

= 154 cm²

★Perimeter of circle = 2πr

= 2 × 22/7 × 7

= 2 × 22

= 44 cm

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