Earl is cutting a piece of cardboard in his art class. First he cut off 20% of the cardboard. Then he cut off 1 over 3 of the cardboard that was left. The piece of cardboard that Earl started with had an area of 900 square centimeters. What is the area, in square centimeters, of cardboard that was left after Earl made his cuts?

good for u

step-by-step explanation:

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.