a round mirror has a circumference of 87.92 inches. calculate the area of the mirror. use 3.14 for pi. round answers to the nearest hundreth if necessary

615.44 in²

Step-by-step explanation:

Use the circumference formula, C = 2r

Plug in the circumference and pi to solve for the radius, r:

C = 2r

87.92 = 2(3.14)r

87.92 = 6.28r

14 = r

Then, use the area formula, A = r²

A = 3.14(14)²

A = 615.44 in²

So, the area of the mirror is 615.44 in²

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.