How was your paper 4 of Math ?????

[Lostsoul]

I did thaat!!!!!

well some people said that we had to use the formula of the cylinder to find the area of the curved area.

 

[IGCSE O/L student]

well some people said that we had to use the formula of the cylinder to find the area of the curved area.

u dnt knw da radius of da cylinder!

 

[phantom]

u dnt knw da radius of da cylinder!

No, the radius of the sector was given, which also was the cylinder's radius

 

[IGCSE O/L student]

No, the radius of the sector was given, which also was the cylinder's radius

yes, but dis is only part of a cylinder

 

[phantom]

yes, but dis is only part of a cylinder

How come!?!?, you use the radius of the cylinder (or the circle) and the angle given to calculate the Volume/Area/Arc's Length/Surface Area

 

[IGCSE O/L student]

How come!?!?, you use the radius of the cylinder (or the circle) and the angle given to calculate the Volume/Area/Arc's Length/Surface Area

da slice of cake of da cake has an angle of 22 degrees. whereas a whole cylinder has 360 degrees

 

[phantom]

da slice of cake of da cake has an angle of 22 degrees. whereas a whole cylinder has 360 degrees

The slice of the cake was FROM the Cylinder itself

 

[IGCSE O/L student]

The slice of the cake was FROM the Cylinder itself

yes, but u cnt use da complete cylinder

 

[Lostsoul]

u dnt knw da radius of da cylinder!

Yeah I know but some of my friends were seriously arguing on this issue, idk the real answerr

 

[Lostsoul]

The slice of the cake was FROM the Cylinder itself

But that was neither a half cylinder nor a quarter one, so which formula?

 

[IGCSE O/L student]

Yeah I know but some of my friends were seriously arguing on this issue, idk the real answerr

jst lyk i'm doin now. mt friends n i nvr had dis discussion.

 

[David Hussey]

btw the tree asnwer was 150 rite?

 

[IGCSE O/L student]

But that was neither a half cylinder nor a quarter one, so which formula?

if it is half, it is 180/360, which means 1/2. dis is 22/360

 

[David Hussey]

yeah it had to be 20 trees exact

yea it was sppsd 2 be 20 trees!

 

[Lostsoul]

if it is half, it is 180/360, which means 1/2. dis is 22/360

Exactlyy so the area of the curved part would be the arc lenght multiply the height

 

[IGCSE O/L student]

Exactlyy so the area of the curved part would be the arc lenght multiply the height

yes, dats ryt.

 

[phantom]

Yeah I know but some of my friends were seriously arguing on this issue, idk the real answerr

The angle Was 22
The Radius Was 12
The height Was 7

only the upper part and the curved area had choclate

Pie x 12^2 x 22/360 + Pie x 2 x 12 x 7 x 22/360 =59.89969993 rounded to 59.9cm^2

 

[IGCSE O/L student]

The angle Was 22
The Radius Was 12
The height Was 7

only the upper part and the curved area had choclate

Pie x 12^2 x 22/360 + Pie x 2 x 12 x 7 x 22/360 =59.89969993 rounded to 59.9cm^2

yes, dts da ans

 

[Lostsoul]

The angle Was 22
The Radius Was 12
The height Was 7

only the upper part and the curved are had choclate

Pie x 12^2 x 22/360 + Pie x 2 x 12 x 7 x 22/360 =59.89969993 rounded to 59.9cm^2

Owww, thanks though

 

[phantom]

Owww, thanks though

You got it Wrong??