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You do not need to know anything at all! You can exist for a short while as a troglodyte in blissful ignorance of everything. Except that you would need to know what a troglodyte is!
Biochemical reactions often take place at the surface of cells and so the bigger the surface area the more reactants are processed. This may be a good thing if you body is taking in oxygen or a bad thing if you are in contact with a contact nerve agent!
Things lose heat by radiation from their surfaces. This is why radiators - for heating homes or cooling cars - have fins to increase their surface areas.
On a more trivial topic, the surface area of a wall will determine how much paint (or wallpaper) you will need.
What else can I help you with?
Why is surface area important to the real world?
Some practical real world examples why surface area is important:If you want to paint a house, you need to know the surface area to determine how much paint to buy.If you want to plant grass on a dirt lot, you need to know the surface area to determine how much grass seat to use.If you want to sew a dress, you need to know the surface area of the dress (dress size) to know how much material you need.If you want to make money mowing lawns, you need to know the surface area of the lawn to know how much to charge for the work.If you want to put carpet in a living room, you need to know the surface area of the room to know how much carpet you will need.If you are making a label for a soup can company, you will need to know the surface area of the can.
Uses of surface area and volume in daily life?
If you want to paint a place, carpet it, plant wheat on it, water it, mow it, pave it, or cover it with cloth, then you need to know what its surface area is. If you want to fill a place with water or beer, or pretty much fill any container with anything, then you need to know what its volume is.
Why do tapeworms have flattened bodies with a large surface area?
This is because they need to fit in anything!
Total surface area of cuboid?
First you need to know the size
What is a real-world situation in which you would find the surface area of a cylinder?
You would need to know the surface area of a cylinder if you are a factory worker at Pepsi. You would need to know the dimensions of the label, so it will fit on the can.
What two things do you need to know to calculate pressure?
To calculate pressure, you need to know the force applied on an object and the surface area over which the force is distributed. Pressure is calculated by dividing the force by the surface area.
Why would someone need to know the surface area of a box?
To know how much material is required to make the box.
When would you need to know the volume of a cube?
When asked to work out the lengths of its edges and its surface area.
How do you find the the radius of a cylinder if you know the surface area?
You cannot. You need to know the height as well. If you know the height, the surface area, A is given by A = 2*Ï€*r2 + 2*Ï€*r*h where r is the radius and h the height.
Why would somebody need to find the surface area of a box?
to know how much paint is needed to coat it
How do you calculate the surface area of a 20 liter drum?
You need to know the radius/diameter or the height of the drum.
How do you find out the surface area of cubiod?
You need to know the Length, Width and Height of the cuboid.Then surface area = 2*(L*W + W*H + H*L) square units.
