Question

4 calcule as áreas das figuras a seguir
A) 4cm 1,2cm

B)3cm 5,2 cm

C)2,4cm 2,4cm

D)14cm

E)3cm 7cm

F)6 cm 5 cm

5 calcule a área total da figura
5cm 5cm 3cm 3cm

Answer 1

Explicação passo-a-passo:

4- a)

$a = b \times h \\ a = 1.2 \times 4 \\ a = 4.8$

b)

$a = b \times h \\ a = 5.2 \times 3 \\ a = 15.6 \: {cm}^{2}$

c)

$a = l \times l = {l}^{2} \\ a = {2.4}^{2} \\ a = 5.76 \: {cm}^{2}$

d)

$a = l \times l = {l}^{2} \\ a = {14}^{2} \\ a = 196 \: {cm}^{2}$

e)

$a = \frac{b \times h}{2} \\ a = \frac{7 \times 3}{2} \\ a = \frac{21}{2} \\ a = 10.5 \: {cm}^{2}$

f)

$a = \frac{b \times h}{2} \\ a = \frac{5 \times 6}{2} \\ a = \frac{30}{2} \\ a = 15\: {cm}^{2}$

5-

$a = l \times l = {l}^{2} \\ a = {5}^{2} + {3}^{2} \\ a = 25 + 9 \\ a = 34 \: {cm}^{2}$

Answer 2

Resposta:

vão tudo hora a Deus

entendeu colega