  In a quest to explain the small value of the today's cosmological constant,
following the approach introduced in [1], we show that the theoretical value of
cosmological constant is consistent with its observational value. In more
detail, we study the Freidmann-Lama\^{\i}tre-Robertson-Walker cosmology
embedded isometrically in an $11$-dimensional ambient space. The field
equations determines $\Lambda$ in terms of other measurable fundamental
constants. Specifically, it predicts that the cosmological constant measured
today be $\Lambda L^2_{\text{Pl}}=2.56\times10^{-122}$, as observed.
