Bok podstawy 1,5 cm
Wysokość ściany bocznej 3 cm
[tex]p = \frac{1}{2} \times a \times h[/tex]
[tex]p = \frac{1}{2} \times 1.5 \times 3 = \frac{1}{2} \times 4.5 = 2.25 {cm}^{2} [/tex]
[tex]p = \frac{ {a}^{2} \sqrt{3} }{4} [/tex]
[tex]p = \frac{ {1.5}^{2} \sqrt{3} }{4} = \frac{2.25 \sqrt{3} }{4} [/tex]
[tex]pc = 3 \times 2.25 + \frac{2.25 \sqrt{3} }{4} = 6.75 + \frac{2.25 \sqrt{3} }{4} [/tex]
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