a)
[tex]Pp = 6 \times \frac{ {2}^{2} \sqrt{3} }{4} = 6 \times \frac{4 \sqrt{3} }{4} = 6 \sqrt{3} {cm}^{2} [/tex]
[tex]Pb = 6 \times \frac{2 \times 6}{2} = 6 \times 6 = 36 {cm}^{2} [/tex]
[tex]Pc = \underline{ \underline{( 36 + 6 \sqrt{3} {)cm}^{2} }}[/tex]
b)
[tex]Pp = \frac{ {6}^{2} \sqrt{3} }{4} = \frac{36 \sqrt{3} }{4} = 9 \sqrt{3} {cm}^{2} [/tex]
[tex]Pb = 3 \times \frac{6 \times 10}{2} = 3 \times \frac{60}{2} = 3 \times 30 = 90 {cm}^{2} [/tex]
[tex]Pc = \underline{ \underline{( 90 + 9 \sqrt{3} {)cm}^{2} }}[/tex]
