i can not remember any of the formulas!!?

Question

1. When dealing with a right prism, what is the most common angle measure?
2. Are all the angles in a right prism equal?
3. Write a formula for the surface area of a prism.
4. What is the formula for the volume of a prism?
5. What two variables are used in the equation for the volume of a pyramid?
6. Can you find the total surface area of a pyramid?
7. What is the formula for the volume of a cylinder?
8. What is the formula for the surface area of a cylinder?
9. How many variables are in the formula for the volume of the cone?
10. What is the volume of a sphere with a radius of 5?

Answer 1

Hi,

1. When dealing with a right prism, what is the most common angle measure? 90° since each side forms a right angle with the base


2. Are all the angles in a right prism equal? No, the base could be a scalene triangle with different sized angles.


3. Write a formula for the surface area of a prism.
SA = ph + 2B (perimeter of the base times height + 2 times the area of the base)


4. What is the formula for the volume of a prism?
V = Bh (area of the base times the prism height)

5. What two variables are used in the equation for the volume
of a pyramid? B and h (area of the base and the pyramid height)


6. Can you find the total surface area of a pyramid?
SA = ½pL + B where p = perimeter of the base. L is the slant height, and B is the area of the base

7. What is the formula for the volume of a cylinder?
V = πr²h where r = radius and h = height


8. What is the formula for the surface area of a cylinder?
SA = 2πrh + 2πr²

9. How many variables are in the formula for the volume of the cone? 2, r and h in V = πr²h


10. What is the volume of a sphere with a radius of 5?
V = 4/3πr³ or 4/3π(5)³ = 523.599


I hope that helps!! :-)

Answer 2

1.right angle
2. No. A right prism can have its two cogruent bases triangular , 4-side , n -sided and so bases can have any angle, depending on number of sides.
3.Depends on the base. and whether the prism is right. The best I can do is surface are = lateral area + 2* area of base.
4. Base * height
5 Area of base and height
6. Yes, lateral area +base
7.pi*r^2h
8 2pir^2 + 2pirh = 2pir( r+h)
9 Two. r and h
10 (4/3)*pi * 5^3 = 500*pi/3

Answer 3

This is kind of a cop out.... but there's a book, "Mathematical Tables from the Handbook of Chemistry and Physics," if you can find it... maybe on Amazon? Anyway, it has all the weird formulae and rules for algebra, trig, and alculus, and a plethora of constants and definitions, and tables than you'll probably ever need. It's compact and totlly awesome. That book gt me through two degrees.

Or you can do a google seach ("right triangluar prism")...