Question

Calcule o valor de X nos triângulos retângulos:​

Answer 1

a) Temos que:

m = 16

n = 9

h=?

$h {}^{2} = m \times n \\ h {}^{2} = 16 \times 9 \\ h {}^{2} = 144 \\ h = \sqrt{144} \\ h = 12$

c)Temos que:

c = 4

a = 5

m=?

${c}^{2} = a \times m \\ c {}^{2} = 5 \times 4 \\ c {}^{2} = 20 \\ c = \sqrt{20} \\ c = 2 \sqrt{5}$

e) Temos que:

h = 8

n = 4

m=?

$h {}^{2} = m \times n \\ 8 {}^{2} = m \times 4 \\ 64 = 4m \\ m = \frac{64}{4} \\ m = 16$

b) Temos que:

a = 5

b= 3

n =?

$b {}^{2} = a \times n \\ 3 {}^{2} = 5n \\ 9 = 5n \\ n = \frac{9}{5} \\ n = 1.8$

d) Temos que:

c = 20

a = 25

h = 12

b=?

$a \times h = b \times c \\ 25 \times 12 = 20 \times b \\ 300 = 20b \\ b = \frac{300}{20} \\b = 15$

f)Temos que :

a = ?

c = 20

m = 16

$c {}^{2} = a \times m \\ 20 {}^{2} = 16a \\ 400 = 16a \\ a = \frac{400}{16} \\ a = 25$