Question

How are the radius and diameter of a circle related?
A) The radius is half the diameter.
B) The radius is twice the diameter.
C) The radius squared is the diameter.
D) The diameter is the square of the radius.
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Answer 1

The radius is always half the diameter. So, your answer is A.

Answer 2

The radius is half of the diameter so option (A) is going to be correct.

What are the ratio and proportion?

The ratio is the division of the two numbers such that they should not be divisible.

For example, 3/4 is not divisible so it will be a ratio in the term 3 is the numerator and 4 is the denominator.

Proportion is the relation of a variable with another. It could be direct or inverse.

Diameter of any circle = 2 times the radius of the circle

Diameter D = 2 × radius R

R = D/2 hence radius is half of the diameter.

For more information about ratio and proportion

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