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i know but if we added the other half... aha ... ok so what equation do i use?

find the area of the rectangular part, then are of each semi-circular shade and add em up!

uugh but adding those up gives me to big of a number hmmm

113 + 168 isn't right?

well it adds up to 281 which isnt one of my options

what are your options?

78π in2 84π in2 108π in2 120π in2

I got one answer :D

it's ok thanks for the help =) and ok =)

yeah would be -the last one - just help her understand.

did you understand til this ?

yeahh when we go to the semi circle stuff i think is when i started to get confused

Now its half of a cylinder

and i guess the rectangular part is open

yeahh i can do it thank-you =)

can you tell me the lateral surface area of it ?

take your time np

ok when i calculate 2*pi*r*h i got 263.76

don't take the value of pi .. just keep pi like that since your answer contains pi

so what will be the lateral surface area ?

ok so 2*r*h and my diamiter is 12 so radius would be 6 and height is 14 so 2*6*14 = 168pi?

and add the area of 2 semicircles

ok so 84 plus the are of 2 semicircles

Yes

so what is it ?

120

i may have calcuulated that last part wrong