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AREE E FORMULE INVERSE<br />
Per ogni poligono calcola la dimensione mancante.<br />
A = 48 cm2 D C<br />
b = 8 cm<br />
h = A : b<br />
h = 48 : 8 = ____ cm<br />
A B<br />
A = 36 cm2 6<br />
C<br />
b = 9 cm<br />
h = (A : b) x 2<br />
h = (____ 36 : ____) 9 x 2 = ____ 8 cm<br />
b = (____ 64 : ____) 10 x 2 = 12,8 ____ m<br />
A B<br />
A<br />
B<br />
D C<br />
A B<br />
Completa le tabelle.<br />
Rettangolo<br />
A = 84 m 2<br />
h = 7 m<br />
Triangolo<br />
A = 54 cm 2<br />
h = 6 cm<br />
Romboide<br />
A = 91 cm 2<br />
b = 7 cm<br />
A = 56 m 2<br />
h = 7 m<br />
b = A : h<br />
b = ________________ 56 : 7 = ____ 8 m<br />
b = A : h<br />
b = (84 : 7) = 12 ___ m<br />
b = (A ____________________________<br />
: h) x 2<br />
b = (54 ____________________________<br />
: 6) x 2 = 18 cm<br />
h = ____________________________<br />
A : b<br />
h = ____________________________<br />
91 : 7 = 13 cm<br />
D C<br />
A = 45 cm2 h = 9 cm<br />
b = A : h<br />
b = ________________ 45 : 9 = ____ 5 cm<br />
A B<br />
Triangolo<br />
A = 132 m 2<br />
b = 10 m<br />
Romboide<br />
A = 126 cm 2<br />
h = 9 cm<br />
Rettangolo<br />
A = 153 cm 2<br />
b = 9 cm<br />
A = 64 m 2<br />
h = 10 m<br />
b = (A : h) x 2<br />
h = ____________________________<br />
(A : b) x 2<br />
h = ____________________________<br />
(132:10)x2=26,4 m<br />
b = A ____________________________<br />
: h<br />
b = ____________________________<br />
126 : 9 = 14 cm<br />
h = ____________________________<br />
A : b<br />
h = ____________________________<br />
153 : 9 = 17 cm<br />
100 SPAZIO E FIGURE<br />
C<br />
D C<br />
A B<br />
A = 6320 cm 2<br />
b = 100 cm<br />
h = A : b<br />
h = ________________ 6 320:100 = 63,2 ____ cm
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