If the radius of a circle is 44 cm, then what is the diameter?
Understand the Problem
The question is asking for the diameter of a circle given that the radius is 44 cm. To find the diameter, we need to use the formula that states the diameter is twice the radius.
Answer
The diameter is $88 \, \text{cm}$.
Answer for screen readers
The diameter is $88 , \text{cm}$.
Steps to Solve
- Calculate the diameter using the radius
The diameter $D$ of a circle is calculated using the formula:
$$ D = 2 \times r $$
where $r$ is the radius. In this case, the radius $r$ is 44 cm.
- Plug in the radius into the formula
Substituting the radius into the formula:
$$ D = 2 \times 44 , \text{cm} $$
- Perform the multiplication
Now, calculating the expression gives:
$$ D = 88 , \text{cm} $$
The diameter is $88 , \text{cm}$.
More Information
The diameter of a circle is always twice the length of its radius. Therefore, if you know the radius, you can easily find the diameter by multiplying by 2.
Tips
- Confusing the radius with the diameter. Remember, the radius is half of the diameter.
- Forgetting to multiply the radius by 2 when calculating the diameter.
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