Cindy wants to secure sequins on a piece of felt shaped like a trapezoid with a height of 10 cm. and bases of 15 cm. and 9 cm. what is the cost of all the sequins if sequins cost $0.80 per cm². of coverage?

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.