antgrzajr04 antgrzajr04

20-03-2018
Mathematics

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A circle has an area of 49•3.14 square units. What is the diameter of the circle?

Respuesta :

hudadagra hudadagra

20-03-2018

The area of a circle is πr².

First we will solve for r, radius, and then double it to find the diameter.

153.86 = (3.14)(r)²
49 = r²
√49 = r
7 = r

Now the diameter:

7*2 = 14

So the diameter is 14 units.

Hope this helps :)

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