9*10^2 is times as much as 3*10^-2

a) 3*10^4 b) 6*10^4 c) 6*10^0 d) 3* 10^-4

look at photo

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