What is the approximate circumference of the circle shown below?

D. 61.2 cm

Step-by-step explanation:

The formula to calculate the circumference of a circle is given by :-

, where d is the diameter of the circle.

In the given picture.,  we have the diameter of circle = 19.5 cm

Then , the circumference of the circle is given by :-

Hence, the circumference of the circle = 61.2 cm

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: (1,3) (3,-1) (5,-5) ?

step-by-step explanation: