5)Determinar a área total da superficie de uma pirâmide regular hexagonal sabendo que a aresta da base mede le o apbtema da pirâmide mede g.

\( \frac{8}{2} a^{2}+\frac{1}{3} a b-\frac{3}{3} b^{2} \) rectar \( \frac{5}{14} a^{2}+\frac{1}{2} a b-\frac{1}{8} \)

5. Han is multiplying \( 10 x^{4} \) by \( 0.5 x^{3} \) and gets \( 5 x^{7} \). He says that \( 0.5 x^{3} \) is not a polynom because 0.5 is not an integer. What is the error in Han's thinking? Explain your reasoning.

A platypus has a momentum of \( 5 \mathrm{~kg} \mathrm{~m} / \mathrm{s} \). It gets scared and starts doubles its speed. What is its new momentum? (Use relationships!)

Escribe con palabras el significado de cada expre- sión algebraica. a. \( \sqrt{x^{3}}+1 \) b. \( (x+1)^{2} \) c. \( x^{-1} \) d. \( 2 x(x+1) \) e. \( \frac{2 x}{x-1} \) f. \( \sqrt[3]{x+1} \)

Si \( \triangle P Q R \cong \triangle X Y Z \), entonces \( \Varangle P \cong \)