13 - What is Surface Area? Definition & Meaning - Calculate Area of Rectangle & Units
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Twitter: / jasongibsonmath
In this lesson, you will learn what area is, why surface area is important, and why do we need to calculate area to solve problems. We measure length in inches, centimeters, and meters. Area is measured in square inches, square centimeters, and square meters. We find the area of an object by determining how many square units fit on the surface. That is why it is called surface area. For rectangles, we can find the surface area by multiplying the length times the width. For circles, the area formula involves Pi and is A = Pi * R^2. There are related equations for area that apply to other common objects such as the area of a square and the area of a cylinder and the area of a triangle. Area is used extensively in Geometry and Calculus.
Пікірлер: 67
Important concept. In my school days I didn't have an Idea that an area was composed of smaller or unit squares. We can use distributive law to better visualize the concept of an area. Eg 2cm×3cm= (1cm+1cm)3cm=6cm^2. Reading is to speed Writing is to remember Practice is to fluency.
In love with Maths .... and with due respect Professor .... loving your explanation .... thank you so much ..... 😊
Thank you your the best math teacher
now iive just acquired the basic idea of unit² (or square unit)...before i only knew in terms of area, unit is just a square unit and in volumr, its just a cubic unit, thats it...but now you opened my eyes...thank you so so much ..
You have done it again!.. I don't comment on all I watch not because the ones I didn't comment one are any lesser than the ones I comment on( I know it's a lot of words) Another eureka-ephiphany moment... Thank you Jason... Thank you .
Thank you very-very much proffeser it's relly needy video which I looking for
Thank you. It helps .lotHi, can you have topics like logic and set theory. Bijective function ptsome thing that.
Thanku for these classes. I really like them and they really help!
@MathAndScience
4 жыл бұрын
You're very welcome!
Thanks Sir
Amazing teach Sir tnq u so much
Thank you very much and good luck Proffesor
@MathAndScience
4 жыл бұрын
Same to you! Thank you so much!
Your work is beautiful sir keep it up
Great professor ❤
A very good break down of the area concept. This is not taught in schools today.
thanks you so much
Nice video, is this section in algebra or geometry?
Your explanation is amazing sir
@MathAndScience
4 жыл бұрын
Thanks so much!
Thanks sir lots of love from nepal
Thanks for your contribution to math and science Jason.Years ago I bought your dvds on how to hp50g and trigonometry. Great dvds, back then your favorite calculator was the hp50g. What is your goto calculator today? Also what its your iq? I you must be a genius.
@MathAndScience
3 жыл бұрын
Thanks so much! Well I still use the HP50g! I haven’t had my IQ tested, but honestly it probably is not anything special. I think I’m just decent at explaining things because I was always that kid in class that never understood what was going on. Took many years to “get it” and it didn’t come naturally to me. Thanks again! Jason
@mikemullenix6956
3 жыл бұрын
@@MathAndScience many thanks Jason, You are indeed a brilliant gifted teacher and mathematician .
@krish70.
Жыл бұрын
@@MathAndScience sir thank you very much I'm studying mbbs But I love much physics much thanks sir
Sir Continue teaching on KZread Sir what does 8² means when we find area of any shape ।।।।। Love from india ।।।।।
@MathAndScience
2 жыл бұрын
8^2 means 8x8=64
@tvshow9052
2 жыл бұрын
@@MathAndScience OK..... thank-you so much sir, Respected Sir from which country you belong
Dear Sir, Why my teacher not a teacher like you? 😅 #GeniusTeacher
@Kaylin26
Жыл бұрын
Tru bro our teacher only told sq cm and didn't explain this
Thanks!
@MathAndScience
Жыл бұрын
Thank you so much!
thank you sir 😊😄
What an explanation 🔥
@MathAndScience
2 жыл бұрын
Thank you!
Sir, can you do more statistics courses, I finished all your statistics courses and I still feel like there is more out there. I hope you can do more statistics lessons soon. Thank you.
I always mess with area and volumes. Help me out geeks...
Question about hp calculators? Is the hp prime => hp50g for engineering? Thank you Jason
@MathAndScience
3 жыл бұрын
Honestly I’m not sure. Don’t know much about that calculator sorry!
You have randomly chosen to check that how many *squares* fits in the rectangle...so can't I choose how many small rhombus fit in the rectangle or how many small rectangles can fit into the bigger rectangle??
@Lemon-ej4pn
Жыл бұрын
You can...then your unit would be rhombus cm
@joerob5917
Жыл бұрын
@@Lemon-ej4pnthat’s sounds so clunky 😂
👍
1inx8in=8 in2
The area of rectangle is 94cm square.its length is twice its breadth. Find its length and breadth.
3mx3m=9 m2
2mx5m=10m2
2cmx3cm=6cm2
area place measure length width height
4cmx3cm=12cm2
area=12square centimeters
thank u because i was failing with length and width so thank u very much
its is very easy
area=6 square centimeters
Ikr
area=10 square meters
My nephew hates maths, but when I explained him the concept of area after watching this video he realised that he loves Maths
@MathAndScience
3 жыл бұрын
This makes me so happy!
area=8 square inches
hahahaha
OMG he's lovesick
A = L•W A = (4cm)(2cm) A = 8 cm^2 Students find the answer to this problem and quickly think they are a mathematician WITHOUT knowing what they found. They have no idea what 8 cm^2 means. Teachers in today's world are pressed for time. Teachers are told by their bosses to teach to the test, which explains why students can pass exams by simply memorizing steps. Memorizing steps is not learning math correctly.
@MathAndScience
4 жыл бұрын
I completely agree. Thank you so much for your nice comment. I really want people to understand what they are doing instead of just doing it.
@malachimartin7030
3 жыл бұрын
Wow
area=9 square meters
hahahaha