bhumibhatta22
bhumibhatta22 bhumibhatta22
  • 07-11-2020
  • Physics
contestada

If the radius of a coinis 20cm, find its
surface area -​

Respuesta :

quasarJose
quasarJose quasarJose
  • 07-11-2020

Answer:

800[tex]\pi[/tex]cm²

Explanation:

Given parameters:

radius of the coin  = 20cm

Unknown:

Surface area of the coin  = ?

Solution:

A coin is made up of two faces;

  Surface area  = 2(πr²)

Insert the parameters and solve;

     Surface area = 2([tex]\pi x 20^{2}[/tex])

    Surface area = 800[tex]\pi[/tex]cm²

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