Which statement is true about a circle? A. A circle's area and circumference are always equal B. A circles area and circumference are never equal. C. A circles area and circumference are equal when the radius is any length except 2 units. or D. A circles area and circumference are only equal when the radius is 2 units.

Option D. A circles area and circumference are only equal when the radius is 2 units.

Step-by-step explanation:

we know that

The area of circle is equal to

The circumference of a circle is equal to

equate both formulas

simplify

therefore

A circles area and circumference are only equal when the radius is 2 units.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

answer: approximately 206 bones

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