Question

I WILL FAN AND MEDAL (:
I need some help with calculus questions.

Answer 1

Is this correct?

Answer 2

@Pawanyadav @welshfella

Answer 3

Yes ,it is correct

Answer 4

Both or just the first one?

Answer 5

First I'm checking 2

Answer 6

okay thank you.

Answer 7

For second A is correct

Answer 8

okay, I knew it was 2x^2, just could figure out the signs

Answer 9

Need explained

Answer 10

yes

Answer 11

Let shorter side be x
Then longer side=?

Answer 12

y?

Answer 13

There are 4 side but along one longer side no need of fence due to river.
So 3 sides left two short, one long

Answer 14

So 2x+y=1800

Answer 15

Right

Answer 16

im following

Answer 17

Then area(f(x))=x*y
=x*(1800-2x)

Answer 18

As 2x+y=1800
y=1800-2x

Answer 19

So area=1800x-2x^2

Answer 20

ohhhh, okay i see now. Makes sense!!

Answer 21

Do you mind explaining this?

Answer 22

A box ,...han

Answer 23

How many faced a box have

Answer 24

6

Answer 25

Faces or surface..... tell

Answer 26

But with an open top there is only 5

Answer 27

4 faces, 2 surfaces

Answer 28

Area of one face=?

Answer 29

No clue...

Answer 30

If side of box be a let the box be cubic in shape

Answer 31

60cm^2? sorry, a little confused

Answer 32

Correct

Answer 33

But it says to find the maximum volume of the box.

Answer 34

So what is side of cube..

Answer 35

60cm^2

Answer 36

Area=60=a^2
a=√60 where a is side

Answer 37

So volume = a^3

Answer 38

so the square root of 60 is a.

Answer 39

Yes , side

Answer 40

RIght. So from there im lost on how to take the square root of 60 ^3

Answer 41

No volume =(√60)^3

Answer 42

√60~8 cm

Answer 43

ugh. im so confused.

Answer 44

What is side =

Answer 45

lol. i feel like we are on repeat. the side equals 60cm^2 volume is LxWxH

Answer 46

The area equals=60 cm^2
Its a cube so volume=a*a*a cm^3

Answer 47

oh my god. thats why. okay!

Answer 48

60 x 60 x 60 cm^3

Answer 49

ugh. i give up.

Answer 50

Eveyrthing i keep doing makes me end up with 216,000

Answer 51

Area = (side)^2
You know that because every face of cubcube is a square

Answer 52

right

Answer 53

And area=60

Answer 54

Then what is side

Answer 55

ugh. so its not 60 x 60 x 60? cm^3

Answer 56

im obviously stupid.

Answer 57

No you are very good

Answer 58

I hope you understand @arianna1453