Question

Pomózcie rozwiązać zadanie 2,3,4,5 :)

Answer 1

2. 4^{2} + ( 2\sqrt{5})^{2} = x^{2}

16 + 20 = x^{2}

x^{2} = 36 / \sqrt{}

x = 6

y^{2} + 4^{2} = 6^{2}

y^{2} + 16 = 36

y^{2} = 36 - 16

y^{2} = 20 / \sqrt{}

y = \sqrt{20}

y - 2 \sqrt{5}

z^{2} + 8^{2} = 10^{2}

z^{2} + 64 = 100

z^{2} = 100 - 64

z^{2} = 36 / \sqrt{}

z = 6

3^{2} + 6^{2} = c^{2}

9 + 36 = c^{2}

c^{2} = 45 / \sqrt{}

c = \sqrt{45}

c = 3\sqrt{5}

3. a) h = a\sqrt{3}/2

h = 8\sqrt{3}/2

h = 4\sqrt{3}

b) a = 6\sqrt{2}

6\sqrt{2} * \sqrt{2} = 12

c) a\sqrt{3}/2 = 6 / *2

a\sqrt{3} = 12 / \sqrt{3}

a = 4\sqrt{3}

d) 8= a\sqrt{2} / \sqrt{2}

a = 4\sqrt{2}

4. P = a*h / 2

p = 8*2 / 2

p = 16/2

p = 8

p = a^{2}\sqrt{3}/4

p = 6^{2}\sqrt{3}/4

p = 36\sqrt{3}/4

p = 9\sqrt{3}

p = a^{2}

p = 8^{2}

p = 64

h = 2\sqrt{2}

p = a*h

p = 7*2\sqrt{2}

p = 14\sqrt{2}

5. a) fałsz

b) prawda

c)fałsz

d) prawda