Question

son cuadrilateros ,ayudenme es para mañana​

Answer 1

$NC = \frac{n(n+1)}{2} [\frac{m(m+1)}{2} ]$

$NC = \frac{4(4+1)}{2} [\frac{3(3+1)}{2} ]$

$NC = \frac{4(5)}{2} [\frac{3(4)}{2} ]$

$NC = \frac{20}{2} [\frac{12}{2} ]$

$NC = 10(6)$

NC = 60