Question

9. Calculați:
a) 129 cm² +15 cm²;
c) 1,15 km²+2,35 km²;
e) 5,7 ha +120 hm²;
b) 232 m² +188 m²;
d) 1 ar+200 dam²;
f) 5 (12,34 m² +17,66 m²).
va rog! repedee, dau coroanaaaa​

Answer 1

Răspuns:

$a)129 {cm}^{2} + 15 {cm}^{2} =144 {cm}^{2}$

$c)1.15 {km}^{2} + 2.35 {km}^{2} = 3.5 {km}^{2}$

$e)5.7ha + 120 {hm}^{2} = \\ = 57000 {hm}^{2} + 120 {hm}^{2} = 57120 {hm}^{2}$

$b)232 {m}^{2} + 188 {m}^{2} = 420 {m}^{2}$

$d)1ar + 200 {dam}^{2} = 201 {dam}^{2}$

$f)5(12.34 {m}^{2} + 17.66 {m}^{2}) = 5(30 {m}^{2}) = 150 {m}^{2}$