The answer depends on the information provided. There is no simple formula unless the object is a regular tetrahedron. It may be necessary to make repeated use of Pythagoras's theorem on the base lengths and vertical height to calculate the slant heights, and use these to derive the area of each face. Not an easy task!
you calculate the area of one side, then multiply it by three.
The question cannot be answered because, unfortunately, you forgot to say what book you are referring to.
The answer to this question depends on what sort of pyramid it is, and that depends on the shape of the base. You can get triangular pyramids (with a triangular base), square pyramids (like those in Egypt), pentagonal pyramids and so on. Let me take just one -- the square pyramid. Let the length of the base sides be 'a' units. Let 'h' units be the perpendicular height (i.e. at right angles to the base and going through the peak of the pyramid) of each side. I gather by lateral area that you mean surface area including the base. I use the symbol * to mean x or multiply. Then the formula for working out the surface area is a*a for the base PLUS each triangular face is 1/2*a*h There are 4 triangular sides so the surface area is (a*a) + 4*(1/2*a*h) If you just want the 4 sides, leave out a*a.
The surface area of prisms or pyramids are simply the total area of the corresponding nets.
Area of the base added to the surface area of the triangles. I believe that's base*height divided by 2.
To calculate the surface area of the equilateral triangular-based prism, you need to calculate the area of the equilateral triangle and all the other sides of the prism. The total area of all the phases will give the total surface are of an equilateral triangular based prism.
you calculate the area of one side, then multiply it by three.
SA equals pi times the radius squared
The question cannot be answered because, unfortunately, you forgot to say what book you are referring to.
The answer to this question depends on what sort of pyramid it is, and that depends on the shape of the base. You can get triangular pyramids (with a triangular base), square pyramids (like those in Egypt), pentagonal pyramids and so on. Let me take just one -- the square pyramid. Let the length of the base sides be 'a' units. Let 'h' units be the perpendicular height (i.e. at right angles to the base and going through the peak of the pyramid) of each side. I gather by lateral area that you mean surface area including the base. I use the symbol * to mean x or multiply. Then the formula for working out the surface area is a*a for the base PLUS each triangular face is 1/2*a*h There are 4 triangular sides so the surface area is (a*a) + 4*(1/2*a*h) If you just want the 4 sides, leave out a*a.
the defnition of find the surface area of triangular prism and cylinder
The surface area of prisms or pyramids are simply the total area of the corresponding nets.
To find the surface area of an equilateral triangular prism you take the area of the rectangular sides and the triangular bases and add them up and your done.
Area of the base added to the surface area of the triangles. I believe that's base*height divided by 2.
2*area of triangular faces + perimeter of triangle*length of prism (not prisim).
Surface area is squared; volume is cubed.
Yes it is possible.