Surface area of a sphere = 4*pi*radius2
The surface area of a polyhedron can be calculated by first calculating the area of each of its polygonal surfaces and adding these together.The surface area of some curved solids (sphere, cylinder, cone) can be calculated from formula but for most curved solids are more complicated and require integration.
Surface area of a sphere = 4*pi*radius squared
2(pi)(r)(h)=the area of the curved surface
Surface area = 4*Pi*radius2
Surface area of a sphere = 4*pi*radius2 Surface area = 4*pi*42 => 201.0619298 Surface area of the sphere = 201 square units correct to three significant figures.
The surface area of a sphere is equal to 4 x Pi x radius2
4*pi*radius2
Surface area = 4*pi*r^2 so r = sqrt[Area/(4*pi)]
Yes. Second contribution: Surface area of sphere = XXXVI = 36 square inches. When all the working out is done, which the previous contributor has failed to do, the answer is: Volume of the sphere = 20.311 cubic inches correct to three decimal places. This was achieved by rearranging the formula (4*pi*r2) for finding the surface area of the sphere in order to find its radius. The radius was then used in the formula (4/3*pi*r3) for finding the volume of the sphere.
Suppose you have a cone with slant height='l' and base radius 'r' and perpendicular height 'h' Curved surface area of COne=pi*r*l =pi*r*(squareroot(r2+h2))
of a circle: pi*(r^2) of a sphere: (surface area) 4*pi*(r^2) of a hypersphere: ... ?
The answer is squareroot r2+h2 squareroot radiusxradius + heightxheight
The surface area is 4 pi r 2. Radius is 7.6cm. This gives you 725.47cm2 rounded up in the hundreds
Surface area of a sphere equals 4 times Pi times the Square of its radius. So plugging in the needed radius of 6 makes the formula Area=4*pi*R^2 or 4*pi *6^2 or 4*36*pi and with pi=3.141592654... this becomes 452.3893421... units (144*3.141592654...)
If the surface area of a sphere is 16 m2, find the radius.4 pi r2 | 4 pi = SA | 4 picross out 4 pi till left with r2r2 = SA |4 pi./r = ./SA|4 pir = ./SA|4 pir = ./16| 4 pi= 1.13m./ means root| means divided or over
The label is placed on the curved surface area of the cylinder. Its area can be found using the formula A = 3.14dh where d is the diameter and h is the height of the can. It is rectangular in shape.
Pi is defined as the ratio of the circumference of a circle to the diameter of the circle.Therefore, if you measure the diameter of the circle (call it 'D') then the circumference of the circle is pi times D.To find the area of the circle use the formula Area = pi* D2 /4 .Going one step further, to a sphere, if you measure the radius of the sphere (call it R, where R is half the diameter D), then:1) The surface area of the sphere is Area = 4 * pi * R2 .2) The volume of the sphere is Volume = (4/3) * pi * R3 .