Question

What is the area of the semicircle in this composite figure rounded to the nearest hundredth?





3.53 ft2

7.07 ft2

28.26 ft2

14.13 ft2

Answer 1

done.......k so what's area of circle?

Answer 2

um..

Answer 3

dont worry......go no..... m here

Answer 4

Semicircles im really confused on..

Answer 5

no..... what's d area of circle...?

Answer 6

diameter ?

Answer 7

not quite..............do u remember something like pi * r^2......?

Answer 8

Pi times the radius to the power of two?

Answer 9

yes.......now that's the area of circle............... a semi-circle is a half-circle......... so just use this formula and divide it by 2........

Answer 10

How do you find the radius?

Answer 11

now if u look closely at the figure.....u'll see that one side of rectangle is 3 ft......now since 2 sides of rectangle are congruent....it is the diameter as well

Answer 12

So it would be half of 3 ?

Answer 13

bingo............

Answer 14

So 3.14 times 1.5 to the power of two?

Answer 15

yupp..............and wat did i tell u about the half-circles (semicircle)..? d formula?

Answer 16

you divide it by 2

Answer 17

atta girl......... so calculate it and tell me what'd u get?

Answer 18

Okay, I took1.5 and I got 2.25, times that by 3.14 and got 7.065. THat right so far?

Answer 19

yes ma'am...............

Answer 20

Then take 7.065 and divide it by 2?

Answer 21

yep uhuh

Answer 22

then you get 3.5325

Answer 23

one of ur answer choices??

Answer 24

eh ive got to round it to the nearest hundred

Answer 25

yea so can u do it??

Answer 26

u have the answer really.........

Answer 27

3.53?

Answer 28

there you go Ms. Smarty......lol......... u got it finally........!! yay :D

Answer 29

I have one more question... Then I wont bug you for a bit.. Lol

Answer 30

k on one condition...

Answer 31

ok?

Answer 32

i'll give the answer........dat fine....?? i'll explain later...

Answer 33

okay!

Answer 34

k hurry up....

Answer 35

its the same figure as this .

Answer 36

ok

Answer 37

What is the total area of this composite figure rounded to the nearest hundredth?

Answer 38

is 39.53 one of the choices??

Answer 39

Heres my choices 18.53 ft2

43.07 ft2

39.53 ft2

20.07 ft2

Answer 40

bingo........got it first......it's wat i said

Answer 41

Oh my gosh thank you so much!

Answer 42

lol.......... ur welcome

Answer 43

u good now?? -_-

Answer 44

For a bit :P haha