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It depends on the figure.

There are simple formulae for cuboids (including cubes) and ellipsoids (including spheres). Those for other regular polyhedra and some other shapes are not too complicated, but there are also shapes where there is no option but to calculate the area of each face and sum the individual areas. And, if the shape is completely irregular, even that may not be an option.

Q: How do you find the surface area of spatial figures?

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The surface area of the 3-D figure will be the total of the areas of the 2-D figures.

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.

to find the surface area you have to first find the area of each part then add the areas together.

to find the surface area of the triangle we just need to multiply the length with breath. area=lengthXbreadth

Yes, if it is bound by plane figures, just add the area of each plane figure. If it has a curved surface, divide it into many small pieces, to approximate the area with small rectangles or triangles, then add them up.

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The surface area of the 3-D figure will be the total of the areas of the 2-D figures.

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.

First find the radius by dividing 19 by 2*pi which is 3.023943919 cm Surface area of a sphere (the ball) = 4*pi*radius2 Surface area = 4*pi*3.0239439192 => 114.9098689 Surface area of the ball: 115 square centimeters correct to three significant figures.

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to find the surface area you have to first find the area of each part then add the areas together.

It depends on the surface area of what!

You don't. You can find the area of geometric figures, not of numbers.

The trapezoid is a plane figure which has surface Area, but no volume but if there was a 3d figure your equation would be. The Surface Area of a trapezoid = ½(b1+b2) x h X Height of figure.

The formula to find the surface area of a parallelogram is Base*Height.

surface area of glass plate

Lenght X width = surface area

The surface-area-to-volume ratio may be calculated as follows: -- Find the surface area of the shape. -- Find the volume of the shape. -- Divide the surface area by the volume. The quotient is the surface-area-to-volume ratio.