A jewelry maker is creating a pendant for a necklace with a gold square on top of a silver circle. Shown is the jeweler’s diagram of Circle A with a square ABCD. She would like the square to have an area of 9 cm^2. If Point C is on Circle A, what would the approximate area of Circle A be?

the answer is d

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answer: i think it is c

we know that

1) the inscribed angle measures half of the arc it comprises.

so

m∠dgf= > expression

2) the opposite angles in an inscribed quadrilateral are supplementary angles

so

m∠dgf=

m∠dgf=°

substitute in the expression to find the value of arc ef

therefore

the answer is

the measure of the arc ef is