Answered

A circle has a diameter of 121 inches.


Which equation can be used to find the radius of this circle?


r=121/2π


r=1/2(121)


r=121π


r=2(121)

Verified Answer :

rhycer12

You would use the equation -r=1/2(121) to find the radius of that circle as the radius is half the diameter

Answer:

option 2nd is correct

\(r= \frac{1}{2} (121)\) inches

Step-by-step explanation:

Diameter of a circle is given by:

d = 2r

where,

d is the diameter

r is the radius of the circle.

As per the statement:

A circle has a diameter of 121 inches.

⇒\(d = 121\) inches

Using formula:

\(d = 2r\)

then;

\(121 = 2r\)

or

2r = 121

Divide both sides by 2 we have;

\(r= \frac{1}{2} (121)\) inches

therefore, an equation can be used to find the radius of this circle is, \(r= \frac{1}{2} (121)\) inches

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