Odpowiedź:
D
Szczegółowe wyjaśnienie:
[tex]a_{1}[/tex] = 12 [cm]
[tex]b_{1}[/tex] = 15 [cm]
[tex]a_{2}[/tex] = [tex]a_{1}[/tex] + 5 = 17 [cm]
[tex]b_{2}[/tex] = [tex]b_{1}[/tex] + 5 = 20 [cm]
[tex]P_{1}[/tex] = [tex]a_{1}[/tex] * [tex]b_{1}[/tex]
[tex]P_{1}[/tex] = 12 * 15
[tex]P_{1}[/tex] = 180 [[tex]cm^{2}[/tex]]
[tex]P_{2}[/tex] = [tex]a_{2}[/tex] * [tex]b_{2}[/tex]
[tex]P_{2}[/tex] = 17 * 20
[tex]P_{2}[/tex] = 340 [[tex]cm^{2}[/tex]]
Różnica:
[tex]P_{2}[/tex] - [tex]P_{1}[/tex] = 340 - 180 = 160 [[tex]cm^{2}[/tex]]