contestada

Paula measures a prize wheel at a carnival and calculates that it has an area of 3.14 square feet. What is the prize wheel's diameter?

Respuesta :

Answer:

The diameter of the prize wheel is 2 feet.

Step-by-step explanation:

Given,

Area of the prize wheel = [tex]3.14\ feet^2[/tex]

Since the prize is a wheel and wheel is in the shape of circle.

So we use the formula of area of circle to calculate the radius.

[tex]Area\ of\ circle = pi\times radius^2[/tex]

Let the radius of the circle be x.

On substituting the value of area and radius, we get;

[tex]3.14= pi\times x^2\\3.14=3.14\times x^2\\\\x^2=\frac{3.14}{3.14} =1\\\therefore x= \sqrt{1} =1[/tex]

So the radius of the circle = 1 feet

And we know that the diameter is twice of radius of the circle.

[tex]Diameter=2\times radius=2\times1=2\ feet[/tex]

Thus the diameter of the prize wheel is 2 feet.