No - the closest triangular numbers either side of 80 are 78 and 91.
A triangular pyramid, or tetrahedron, has four triangular faces. If each face has an area of 80 m², the total surface area can be calculated by multiplying the area of one face by the number of faces: (4 \times 80 , \text{m}^2 = 320 , \text{m}^2). Therefore, the surface area of the triangular pyramid is 320 m².
Is 63 a triangular number I think it is a triangular number.
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No, 35 is not a triangular number.
No, 18 is not a triangular number.
Is 63 a triangular number I think it is a triangular number.
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no it is not a triangular number
Decimal triangular number it is
36 is a triangular number, Square number and also a Consecutive number.
They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.
No, 324 is not a triangular number!
yes it is a triangular number
No, 18 is not a triangular number.
No, 35 is not a triangular number.
No, 172 is not a triangular number.
No, 33 is not a triangular number.