One of the most difficult things students face these days is the problem that comes with their base.
While studying mathematics, the student may come across a lot of steps and equations in the situation of a particular problem and this can be challenging when the basics are not clear.
Topics like mensuration that have different uses of formulas like the volume of the cube, volume of sphere, the surface area of the hemisphere, etc. all can be very confusing if the concept is not clear. One of the best ways to properly get the concepts well in your head is by learning with the help of Cuemath.
When you are learning mathematics, here are some of the most important things that you need to know before diving into the topic:
1. Basics:
No matter what you learn in math, it is always used ahead in other topics, you should not forget about the topics you have learned before and in case you do you need to revise your basics before getting into all the fresh topics so that you can solve everything well.
2. Formulas:
Some formulas are required to be known when there is a need to solve an equation. For example, in an equation, if the sum is mentioned in a particular way, the opening of the brackets needs to be done according to the rules. The equation (a+b)2 = a2 + 2ab + b2 is used while solving and there are many other rules as such
3. BODMAS:
BODMAS stands for B-Brackets, O-Orders (powers/indices or roots), D-Division, M-Multiplication, A-Addition, S-Subtraction. This is one of the most important rules of math since it is used almost everywhere while solving the equation and when you study mathematics, this rule is applied a lot and is one of the most basic rules so you need to be aware of this one.
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Since schools and colleges have been shut due to the pandemic it has become difficult to carry on with the studies with full concertation. Even though the classes are taking place online, the doubts have been difficult to solve since there is still a sort of communication gap between the students and the teachers.
A great solution to this problem is provided to the students by Cuemath. With the online classes, students will easily be able to study well. it is focused on personally concentrating on every student by providing personal mentors so that all the doubts are always cleared.
The topic of mensuration has a lot of formulas and the concept of a sphere is one of the main ones to learn.
There is the radius, diameter, surface area, volume, etc. Here is how the surface area of the sphere is derived:
Surface Area of Sphere = Lateral Surface Area of cylinder
= The surface area of Sphere = 2πrh
In this case, height of cylinder = diameter of sphere = 2r
Hence, surface area of sphere is 2πrh = 2πr(2r) = 4πr2 square units.
The steps to calculate the surface area of a sphere is:
- Step 1: find out the radius of the sphere.
- Step 2: Take the square of the radius by multiplying it by itself.
- Step 3: Then Multiply r2 by 4.
- Step 4: Multiply the value of 4r2 by the approximate value of pi, that is, 3.14.
- Step 5: For the last step, add the units to the final answer.
So, this is how you find the surface area of Sphere.
All these aspects are important to understand and you can get all the information by learning with the help of Cuemath. Get all your doubts cleared with the help of the best way of learning.
