yr 10 - surface area of shape | Mathematics | Page 1

umbral zealot Oct 20, 2023, 6:45 AM

#

bronze geyserBOT Oct 20, 2023, 6:45 AM

#

umbral zealot

#

Wait patiently for a helper to come along.
Once someone helps you, say thank you and close the thread with:

+close

Feel free to nominate the person for helper of the week in #helper-nominations
Do not ping the mods, unless someone is breaking the rules.
If you're happy with the help you got here, and the server overall, you can contribute financially as well:

scenic veldt Oct 20, 2023, 6:46 AM

#

umbral zealot

first, whats the SA of the box

umbral zealot Oct 20, 2023, 6:47 AM

#

4(10x6) + 2(10x10)

#

so 440

scenic veldt Oct 20, 2023, 6:47 AM

#

now whats been removed and what is it replaced by

umbral zealot Oct 20, 2023, 6:48 AM

#

the middle of the top face with a hemisphere

scenic veldt Oct 20, 2023, 6:48 AM

#

oh i forgot surface area of a sphere formula tragic

umbral zealot Oct 20, 2023, 6:48 AM

#

its 4 x pi x r^2

scenic veldt Oct 20, 2023, 6:49 AM

#

oh nice

#

okay that should be enought o solve it

umbral zealot Oct 20, 2023, 6:49 AM

#

alr let me try

#

alr I got 490.27cm

umbral zealot Oct 20, 2023, 6:50 AM

#

scenic veldt okay that should be enought o solve it

would ^ be the correct answer

scenic veldt Oct 20, 2023, 6:50 AM

#

show steps?

umbral zealot Oct 20, 2023, 6:50 AM

#

alr

#

4(10x6) + 2(10x10) + (4 x pi x 4^2)/2 + pi x 4^2 - 2(pi x 4^2)

#

the first part is rectangular prism

#

the middle is hemisphere

#

and the end is subtracting 2 (common area)

scenic veldt Oct 20, 2023, 6:54 AM

#

gyea looks good

umbral zealot Oct 20, 2023, 6:55 AM

#

alr thx

#

+close

#yr 10 - surface area of shape