There are 1,860 steps from the street level to the 102nd floor of the empire state building. if a person can walk up the stairs at an average rate of 31 stairs per minute, how much time would it take to walk up the stairs from the street level to the 102nd floor?

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

answer: $1794

step-by-step explanation: