It is 17*(5+5+5) = 17*15 = 255 square units.
225 units squared
There is no equation - the answer is explicit in the name.A pentagonal prism has pentagonal bases. A pentagon has 5 sides. It could not be simpler!
240 units squared
Pentagon (and in 3d: triangular prism and tetrahedron.)
A pyramid with a square base, or a triangular prism.
It is 17*(5+5+5) = 17*15 = 255 square units.
225 units squared
There is no equation - the answer is explicit in the name.A pentagonal prism has pentagonal bases. A pentagon has 5 sides. It could not be simpler!
240 units squared
Pentagon (and in 3d: triangular prism and tetrahedron.)
Any prism with a base of 5 or more sides, any pyramid with a base of 7 or more sides, plus lots of miscellaneous polyhedra.
A prism is any 3 dimensional geometric object with parallel bases which are congruent polygons. The lateral faces of a prism are parallelograms. We generally talk of an n-sided prism where n is a natural number telling us the number of sides the prism has. To be more precise an prism is a polyhedron with two congruent polygonal faces and all the remaining faces are parallelograms. A cube is a common example of a prism. It has six sides. A triangular prism has 5 sides. So the answer to the questions : how many sides does a prism have? is it all depends on the prism, it can have different number of sides. Now a pyramid is also a 3 dimensional shape but instead of two bases it has one base connected to a point called the apex. The base of a prism is a polygon and a prism is a polyhedron also. It can have different number of sides also so there is once again no fixed answer.
Lateral area of the prism excluding the two ends: (3*20)+(4*20)+(5*20) = 240 square units
A triangular prism has nine sides to it.
a triangular prism has 5 sides.
ether a triangular prisem or a pyramid (sorry on spelling) Wrong. If it has a triangle base it is a tetrahedron. If it has a square base it is a pyramid if it has two identical shapes on either ends (in this case triangles) and 5 rectangle faces then it is a prism. Technically a 3D prism is a tetrahedron