parallelogram is base times height pyramid volume is length by width by height divided by 3. basically working out volume of a cube but divide by 3 at the end,
If anyone is in need of help in some last minute revision for the maths exam post your questions here and I'll try my best to help. I got an A* this November so want to try and help anyone if I can. Good Luck with the exam everyone!
I'm getting really confused with algebraic fractions such as this (sorry for bad quality)
could you help me solve it?
I'm really sorry I've never been able to understand them, they were always my worst topic. I found this video which I hope can help you though -http://m.youtube.com/watch?v=Ea48eQ4GeJg. Good Luck in your exam!
Could you explain how to find a perpendicular line from a given line equation or co-ordinates please if that makes sense? I'm really not sure on it at alllll 😂
Take the lines gradient as m, a perpendicular line will have the gradient - 1/m. If I specifies that it passes through a certain point, make sure you use that as the c in the equation. Does this make sense, I'll look for a video to help you too if it doesn't. Good luck in the exam.
Do any of you know all the "extra" formulas needed?
Not the ones on the front, I need more formulas like:
Area of a parallelogram Volume of pyramid
things like that
Area of a cuboid is one; basexheightxlength Volume of a cylinder is one too; Base(pie r^2) X height Surface area of a cylinder; 2pie r^2 + 2pie r x height
Also remember that the formula for the curved surface area of a cone is given not the total. To work out the total do curved surface area X area of base
Think that's all, might want to check just incase. Good Luck!
Take the lines gradient as m, a perpendicular line will have the gradient - 1/m. If I specifies that it passes through a certain point, make sure you use that as the c in the equation. Does this make sense, I'll look for a video to help you too if it doesn't. Good luck in the exam.
Nono it's fine I'm pretty sure I understand now, Thankyou!!
@Ben.M@TJ2001 I struggle with this kind of stuff mainly
Algebraic Proof Harder Vectors Qs Surds Congruent Proof Similar Shapes
Proof is hard to explain over typing, this short video may help.. http://m.youtube.com/watch?v=DxODoNGetVY With vectors the basic rule to remember is if the are multiples they're parallel, and if they're multiples and share a common point it's a straight line. Sometimes it can be very hit or miss with the complicated problems but providing you remember those rules you can give it a good go. Surds again can be very hit or miss, but this short video should outline the basic principle - http://m.youtube.com/watch?v=Aq8FavvjSII - and a video is probably easier to understand that if I was to try and type out an explanation. Congruent triangles, make sure you remeber the four rules of what needs to be equal to be congruent. SSS (three side) AAS (two angles and corresponding side) SAS (two sides and included angle) RHS (right angle, hypotenuse, side) For similar shapes know these rules and you'll be fine... (K being the scale factor) Length - times by K Surface area - times by K^2 Volume - time by K^3
Ummm, the expressions for volume and area like the pi ones, cuz I wanaa make sure I know 'em properly, thanks very much! & That's the last thing, hopefully!
go on https://www.youtube.com/watch?v=-z4SUypJZxo its a bit annoying but trust me itll stay in your head i heard this once in yr 7 and i still remember it helps with circles and pi