Question

The diameter of the larger circle is 20.4 cm.
The diameter of the smaller circle is 10.8 cm.

What is the approximate area of the shaded region?



A.
326.7 cm²

B.
289.4 cm²

C.
235.1 cm²

D.
72.3 cm²

Answer 1

the shaded region is the larger circle

Answer 2

you have to use the area formula: pi*r^2 for both to figure out. first, do pi*10.2^2

Answer 3

here is the circle

Answer 4

ok, calculate the information i have given you

Answer 5

i'll try

Answer 6

trying is better than not trying

Answer 7

k i got 20.4 = 10.2^2

Answer 8

10.2^2 is just a fancy way for 10.2*10.2. so redo that

Answer 9

104.04

Answer 10

ok now multiply that by pi

Answer 11

326.6856

Answer 12

ok now to the smaller part. do 5.2*5.2

Answer 13

27.04

Answer 14

no multiply that by pi

Answer 15

now*

Answer 16

84.9056

Answer 17

ok subtract that from 326.6856

Answer 18

241.78

Answer 19

now what

Answer 20

you rounded pi to 3.14 so the answer you got will be off by a little bit. your answer is the one that is closer to 241.78

Answer 21

i just calculated it with everything exact. 235.1 is closest, so thats your answer

Answer 22

ok thx i will give u medal

Answer 23

no problem, and thank you. you deserve one too!

Answer 24

na

Answer 25

thx

Answer 26

no problem. if you need any help, let me know