Question

GEOMETRY HELP PLS :) WILL AWARD/MEDAL!
Find the area of the shaded region of the figure. Round your answer to the nearest tenth. Think: area of the shaded region = area of the whole – area of unshaded region

Answer 1

area shaded region will be equal area of square minus area of these 2 semicircle - can you calcule it now ?

Answer 2

I may have gotten it. It looked tricky, I'm just not absolutely sure. You know when teachers don't go through everything.. lol

Answer 3

48?

Answer 4

oh wait, I didn't use PI

Answer 5

13.7?

Answer 6

And thanks for helping me btw :)

Answer 7

64 - (3,14*4^2) = 64 - 3,14*16 =64 -50,24 = 13,76 units squared

Answer 8

this is area of shaded region

Answer 9

well, using 3.14 but not PI :P I have a calculator to do actual PI

Answer 10

Thanks a lot! so ya, I did 64 - PI x 16 in my calc and got 13.7345... its 13.7 :)

Answer 11

but do you understand it now ?

Answer 12

Yes, ill show u how I got my answer.... area of the whole was 64... 180/360 * 4PI^2 = 2880 / 360 = 8PI x 2 = 16PI.... 64 - 16PI = 13.7

Answer 13

180 was from half the circle.. 4 was from the radius being half of the diameter(8)... the x 2 is because there is 2 of them.

Answer 14

yes right