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długość schodów - 20*48= 960 cm
poręcz (p)
p²= 280² + 960²
p²= 78400 + 921600
p²=1000000
p=√1000000
p=1000 cm
2304 + 196 = x
2500 = x do kwadratu
x=50
50 * 20= 1000cm
a² = 48² + 14²
a² = 2304 + 196
a² = 2500
a = √2500
a = 50 cm
20 * a = 20 * 50 cm = 1000 cm = 10 m
Odp.: Poręcz ma długość 10 m.
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