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Skrivnosti Å¡tevil in oblik 7

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ŠPELA SE PREIZKUSI<br />

OBSEGI IN PLOŠ»INE<br />

6. naloga: Plošč<strong>in</strong>a paralelograma meri 35 dm 2 , viš<strong>in</strong>a vb = 50 cm.<br />

Izračunaj dolž<strong>in</strong>o stranice b.<br />

4T<br />

7. naloga: Izmeri potrebne podatke <strong>in</strong> izračunaj plošč<strong>in</strong>o deltoida.<br />

4T<br />

D<br />

A<br />

C<br />

1 cm<br />

B<br />

8. naloga: V koord<strong>in</strong>atnem sistemu z enoto 1 cm nariši trapez s podatki:<br />

A(1, 1), B(11, 1), C(7, 9), D(3,9).<br />

Izmeri potrebne podatke <strong>in</strong> izračunaj obseg <strong>in</strong> plošč<strong>in</strong>o tega trapeza.<br />

7T<br />

62

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