Odpowiedzi

2010-03-28T12:33:46+02:00
A - krawędź podstawy
a√2 - przekątna podstawy

a√2 = 10√2 |:√2
a = 10

H = 120%*10
H = 1,2*10
H = 12

Pb = 4*10*12
Pb = 40*12
Pb = 480
2010-03-28T12:37:46+02:00
2010-03-28T12:39:43+02:00
D=10√2
a√2=10√2 |× √2
2a=20 |÷ 2
a =10 cm

10 cm = 100%
h cm = 120%
h= 120 ×10 / 100
h= 12cm

Pb= 4(h × a)
Pb= 4(12 × 10)
Pb= 480 cm²
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