Odpowiedź:
a)
c² =12² + 16² = 144 + 256 = 400
c =
a) R = 0,5 c = 10
P = π R² = π*10² = 100 π
P = 100 π cm²
==================
b)
PΔ = 0,5* 12 cm* 16 cm = 96 cm²
==============================
c) p = 0,5*( 12 + 16 + 20 ) cm = 24 cm
P = p*r
96 cm² = 24 cm* r / : 24 cm
r = 4 cm
===========
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Odpowiedź:
a)
c² =12² + 16² = 144 + 256 = 400
c =
a) R = 0,5 c = 10
P = π R² = π*10² = 100 π
P = 100 π cm²
==================
b)
PΔ = 0,5* 12 cm* 16 cm = 96 cm²
==============================
c) p = 0,5*( 12 + 16 + 20 ) cm = 24 cm
P = p*r
96 cm² = 24 cm* r / : 24 cm
r = 4 cm
===========
Szczegółowe wyjaśnienie: