Question

Mam tu 3 zadania + zadanie z * sa to ostroslupy klasa 3. Bardzo bym prosila o rozwiazanie daje naj z gory dziekuje ;> ( zadania w zalaczniku)

Answer 1

 

Pp=10^2=100

       ______

h=√100-50 = 5√2

f=√75=5√3

Pb=100√3

V=100/3*5√2=500√2/3

Pc=100cm^2+100√3cm^2=100(1+√3)cm^2

 

 

Pp=6*4√3=24√3cm^2

48=8√3*h

h=(48/8√3)*(√3/√3)=2√3cm

 

 

a=8

tg60 = H/(8√3/3)

H=√3*(8√3/3)=24/3=8

Pp=64√3/4=16√3

(4√3/3)^2+64=h^2

208/3=h^2

h=4√39/3

Pb=3*32√39/3=32√39

Pc=16√3+32√39

V=(16√3/3)*(4√39/3)=64√117/9

 

*

800-544=256

256=a^2

a=16cm

Pp=256cm^2

544/4=136

16h/2 = 136

16h=272

h=17

64+H^2=289

H^2=225

H=15   

V=Pp*H=256*15=3840cm^3

 

 

 Prosze :>

Answer 2

1.

Pp=10^2=100

       ______

h=√100-50 = 5√2

f=√75=5√3

Pb=100√3

V=100/3*5√2=500√2/3

Pc=100cm^2+100√3cm^2=100(1+√3)cm^2

 

2.

Pp=6*4√3=24√3cm^2

48=8√3*h

h=(48/8√3)*(√3/√3)=2√3cm

 

3.

a=8

tg60 = H/(8√3/3)

H=√3*(8√3/3)=24/3=8

Pp=64√3/4=16√3

(4√3/3)^2+64=h^2

208/3=h^2

h=4√39/3

Pb=3*32√39/3=32√39

Pc=16√3+32√39

V=(16√3/3)*(4√39/3)=64√117/9

 

*

800-544=256

256=a^2

a=16cm

Pp=256cm^2

544/4=136

16h/2 = 136

16h=272

h=17

64+H^2=289

H^2=225

H=15

V=Pp*H=256*15=3840cm^3