haskett224 haskett224
  • 10-04-2020
  • Mathematics
contestada

The volume of a cylinder is 770 cm. It's height is 5 cm. Find its approximate radius.
7 cm
14 cm
9 cm
3.5 cm

Respuesta :

aaaamnaaah
aaaamnaaah aaaamnaaah
  • 10-04-2020

Hey there,

The equation for the volume of a cylinder is V = πr²h.

The first step into finding the radius is to plug in what you already know into the equation:

  • 770 = πr²5

We divide both sides by 5:

  • 154 = πr²

Now we divide both sides by π:

  • 49.0197224723 = r²

Finally we just do the square root of 49.0197224723:

  • 7.0014086063 = r

The radius therefore would be about 7cm.

Hope I helped,

Amna

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