From a solid cylinder whose height is 2.4cm and diameter 1.4cm, a conical cavity of the same height and diameter is hollowed out. find the total surface area of the remaining solid to the nearest cm square.
I already have the answer. can you pls tell why the curved surface area is added instead of subtracting? he asked the remaining solid right? so please clarify.
Attachments:
Answers
Answered by
2
Look...
if we wanna take out the SA of the whole cylinder then we can do-
pi r2 h (CSA)+ pi r2 (upper ring) + pi r2( lower ring)
so when the cone is removed the upper ring is removed but the lower ring is still there hence we add a pi r2.
HOPE YOU UNDERSTOOD...
your handwriting seems like you are a guy...please dont disappoint me hope you are a girl.❤
if we wanna take out the SA of the whole cylinder then we can do-
pi r2 h (CSA)+ pi r2 (upper ring) + pi r2( lower ring)
so when the cone is removed the upper ring is removed but the lower ring is still there hence we add a pi r2.
HOPE YOU UNDERSTOOD...
your handwriting seems like you are a guy...please dont disappoint me hope you are a girl.❤
Attachments:
varunheels9:
you first tell me your insta id.
ill check out later.
then we will see......
ok
my name is Priyanshu Ranjan
insta id- priyanshu_05
okay
I'll check it later.
i will not do anything mischievous...so dont hesitate =)
all right
Similar questions