It is the sum of the areas of its four faces.
the answer is 120
It will be: 4*30mm2 = 120mm2
Surface area of any pyramid is 1/2Pl + B; where P=perimeter of the base, l=slant height and B= Area of the base.
If its a triangular based pyramid (tetrahedron) then it will have 4 equilateral triangle faces and so find the area of one face and multiply it by 4 to give the total surface area.
4*50 = 200 cm2.
It is 288 cm^2.
the answer is 120
Surface area of a triangular pyramid: SA = 1/2 as + 3/2 sl a = altitude of the base triangle s = side of the triangle l = slant height of the pyramid.
It will be: 4*30mm2 = 120mm2
False, the prism can be of any length.
Surface area of any pyramid is 1/2Pl + B; where P=perimeter of the base, l=slant height and B= Area of the base.
If it is a 4 faced tetrahedron pyramid then its complete surface area is 4*80 =320 square centimetres
total surface area is all of the area. ex. for a square pyramid it would be the area of the square on the bottom and the four triangle sides lateral surface area is all the surface area EXCEPT the base. ex. for a square pyramid it would be the area of the four sides of the pyramid. the bottom square is NOT included. for a triangular prism it would be the area of the three rectangle sides, NOT the two triangular sides
If its a triangular based pyramid (tetrahedron) then it will have 4 equilateral triangle faces and so find the area of one face and multiply it by 4 to give the total surface area.
4*50 = 200 cm2.
The first comprises one rectangular face and four triangular faces whereas the second has two triangular and three rectangular faces.
The surface area ( S ) of a triangular pyramid (or tetrahedron) can be calculated using the formula ( S = B + \frac{1}{2} P l ), where ( B ) is the area of the triangular base, ( P ) is the perimeter of the base, and ( l ) is the slant height of the triangular faces. Specifically, if the base is an equilateral triangle, the area can be calculated using the formula ( B = \frac{\sqrt{3}}{4} a^2 ), where ( a ) is the length of a side of the base. The surface area will then include the area of the base and the areas of the three triangular faces.