Which of the following formulas would find the Lateral Area of a right cylinder where h is the height, and r is the radius?
A. LA = 2rh
B. LA = 2r2
C. LA = 2r
D. LA = rh
Hi, the answer is none of them, since [...]
1.What is the area formula for a rectangle
2. What is the area formula for a triangle
1.What is the area formula for a rectangle
A = W × L …………… where W = width, L = length
2. What is the area formula for a triangle
A = (b × h) / 2 ……….. where b = base, h [...]
The surface area of a cone is A = πrl where l is the slant height of the cone (if you don’t know it, but know the height and radius, you can use the Pythagorean Theorem).
You can find the proof here:
http://www.allendesigns.com/AreaofCone/AreaofCone.htm
For a cylinder, the surface area is:
A = 2πr² + 2πrh
For the cylinder, we compute [...]
Which formulas can be used to find the surface area of a right prism where p is the perimeter of the base, h is the height of the prism, BA is the area of bases, & LA is the lateral area?
there may be more than one right answer.
A. SA = BA + 1/2 ph
B. SA [...]
PLEASE HELP! Very important help much appreciated
Hi,
Lateral Area of any prism = perimeter of base x height of prism
Lateral Area of any regular pyramid = ½ x perimeter of base x slant height of pyramid
(Remember: apothem² + height² = slant height²)
Lateral Area of any cone = πrs, where r = radius of base and [...]
I need to get a better approach towards getting the answer to these types of questions:
~Find the height of a pyramid whose base is a regular nonagon with side length 8 inches and lateral faces are isosceles triangles with legs 30.
~ how do you get the answer to this question..step by step?
volume:
triangle-base x height divide [...]
Volume and area formulas?! help?!?
SURFACE AREA
rectangular prism_______________________
triangular prism______________________
cylinder___________________________
square pyramid____________________
cone______________________________
sphere____________________________
VOLUME
rectangular prism____________________
triangular prism_____________________
cylinder_____________________________
square pyramid______________________
cone________________________________
sphere___________________________
formulas 2-d object
area of a square_____________
rectangle______________
parallelogram_____________________
trapezoid____________________
rhombus_______________________
triangle_________________________
circle___________________________
circumference of a circle
THANKS SO MUCH! I REALLY REALLY APPRECIATE!
2-D
Square= Length x Width
Rectangle= Length x Width
Parallelogram= Base x Height
Trapezoid= Base x Height
Rhombus= Base x Height
Triangle= Base x Height /2
Circle= Pi R^2
Circumference= Pi x diameter Or… 2 x Pi x [...]
http://img410.imageshack.us/img410/5233/mathsl.jpg
I just sketched 3 shapes quickly. Im very unsure what formula to use on A and C.
Thanks
A & B:- This figure is formed by 2 right angled triangles and 3 paralellograms
C :- Formed by 4 paralellograms and 2 trapeziums
Formulas:
Area of paralellogram = base * height
Area of triangle = (1/2) * base * height
Ares of trapezium [...]
I need help with these formulas:
What is the formula to finding the area of a circle if all you have to work with is the diameter.
What is the formula to finding the cirfumference of a circle is you only have the radis or diameter?
Please help me, I am confused!!!
2 times radius = diameter [...]
The area of a regular pentagon is equal to 1.720a (where a= the length of a side), so multiply that by length for volume of a regular prism, or for area, multiply it by 2 and add (5 times [a * L]), where L is the length.
In the case of an irregular pentagonal prism, divide [...]
