ReasoningFind the number of triangles in the given fig?

Find the number of triangles in the given fig?

No. of triangle in each base = 5

So $= \frac{[n (n + 2) (2 n + 1)] - 1}{8}$

$\Rightarrow \frac{(5 \times 7 \times 11) - 1}{8}$

$\Rightarrow \frac{384}{8} = 48$