[DOC] [TLE] Surface Area Formulas - Math.com [PAR] (pi = pi = 3.141592...) Surface Area Formulas In general, the surface area is the ... 
Since these are all the same, you can multiply one of them by six, so the surface 
area of a cube is 6 times one of the sides squared. ... Again, there are two of them
, so their combined surface area is 2ab. ... Surface Area of a Sphere = 4 pi r 2... [DOC] [TLE] Derivation of Sphere Volume and Surface Area Formulas - Math Forum ... [PAR] Currently in math class we are discussing surface areas and ... I can understand 
the pi*r^2, but I do not understand why it is 4 and not ... on the surface of the 
sphere and connecting its corners to the center of the sphere. [DOC] [TLE] SOLUTION: The formula for the surface area of a sphere is {{{A=4*pi ... [PAR] SOLUTION: The formula for the surface area of a sphere is {{{A=4*pi*r^2}}}, ... up 
the square root using the identity sqrt%28x%2Fy%29=sqrt%28x%29%2Fsqrt% } 
... of A, we can plug in the given surface area (113 sq in) in for A and solve for r [DOC] [TLE] Surface Area and Volume of Cylinders - Instructions [PAR] There are two ends so their combinded surface area is 2* pi r2. The surface area 
of ... the same, and can be calculated using the formulas for the area of a circle. ... 
The area of the side surface can be determined by imagining that the side ... area 
of a cylindrical tank with a base diameter of 18 meters and a height of 4 meters. [DOC] [TLE] How to find the surface area of a sphere - SAT Math - Varsity Tutors [PAR] In order to determine the surface area of the hemisphere, we must find the 
surface area of ... Now, based on this, we can ascertain the surface area using 
the equation: ... A point on its surface is found on the x-y axis at (6,8). ... The area 
of a circle with radius 4 divided by the surface area of a sphere with radius 2 is 
equal to:. [DOC] [TLE] Areas, Volumes, Surface Areas - Math [PAR] Areas. square = a2. rectangle = ab. parallelogram = bh. trapezoid = h/2 (b1 + b2). 
circle = pi r 2. ellipse = pi r1 r2. triangle = (1/2) b h. equilateral triangle = (1/4)... [DOC] [TLE] Surface Area of Spheres - Teachers' Choice Software [PAR] 4  3.14  52. = 314. Also, if the surface area of the sphere is known, then the 
radius can be ... If you choose 'Open this file from its current location', then Maths 
Helper Plus ... Click on the 'B' edit box and type the value of p that you are using. 
often this will be 3.14, but may also be 22/7. For greatest accuracy, type 'pi' for p. [DOC] [TLE] Area of a Circle - Math Goodies [PAR] radius = 4 cm. Area equals Pi times r times r. Area = 3.14  (4 cm)  (4 cm). Area = 
50.24 cm ... We can also find the radius (and diameter) of a circle given its area. [DOC] [TLE] Sphere - Wikipedia [PAR] A sphere is a perfectly round geometrical object in three-dimensional space that 
is the surface ... In the limit as r approaches zero this equation becomes: ... In 
modern mathematics, this formula can be derived using integral calculus, i.e. disk 
.... The sphere has the smallest surface area of all surfaces that enclose a given... [DOC] [TLE] Cylinder volume & surface area | Solid geometry intro | Solid ... [PAR] Apr 13, 2011 - 8 minA cylinder's volume is  r h, and its surface area is 2 r h + 2 r. ... the lateral  surface area is ... [DOC] [TLE] Area of a Surface of Revolution - Stewart Calculus [PAR] By taking a limit, we can determine the exact surface area. ... where is the 
average radius of the band. r. 1. 2 r1 r2

Question: Its surface area can be determined by using 4 pi r2
Answer: a sphere