I need help in finding surface area in cylinders!

[remote bone]

I did it and found the answer but i am not sure if it is correct

[normal pagoda]

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[sullen lagoon]

How much u got?

[remote bone]

Total surface area is 283.16cm2

This is rounded to three significant figures

[remote bone]

Is it corrrect?

[sullen lagoon]

I got 282 if I rounded it too 3 significant figures

Let me recheck

[remote bone]

i think its cause

i rounded the answers to three significant figures

before adding them up

[sullen lagoon]

Well it's 282

282*

@remote bone check ur solution once ig

[remote bone]

alr wait a min

[sullen lagoon]

Even if u get 283.16 as answer it shud be 283 if u rounded it to three significant figures ig

[remote bone]

yep i get 283.169

rounded is 283

is it correct?

or is it 282

oh wait nvm

youre correct

cause i used the 3.13 blablah thing instead of using pi

then i get 282.4

[sullen lagoon]

,calc(2×22/7×5.1×8.8)

[nocturne saffron]

The following error occured while calculating:
Error: Undefined symbol ×22

[sullen lagoon]

,calc

[nocturne saffron]

Please give me something to evaluate.
See ,help calc for usage details.

Jun 1, 2024, 11:27 AM

[sullen lagoon]

,help calc

[nocturne saffron]

`calc` command documentation.

Usage

,calc <expr>

Description

Calculates the provided expressions and returns the result.

Multiple expressions may be entered simultaneously, separated by newlines.
Variables defined in one expression will be remembered in the expressions below.

For further documentation see the mathjs API docs.

Examples

,calc sin(45 deg)
,calc det([1, 1; 2, 3])
,calc 5 inches to cm

Have more questions?

Visit our support server here to speak to our friendly support team!

[optional] and <required> denote optional and required arguments, respectively.

[robust gyro]

Result: 282.102857

[sullen lagoon]

@remote bone it's 282 did u use 2piR(R+H) formula?

[remote bone]

i found it seperatley

the side area

and cricle

2pirh

pi r^2