Question

Oblicz pole koła o promieniu

a)2cm

b)3cm

c)2 i jedna druga

Answer 1

P=π r²

 

a)

r=2cm

P=π * (2cm)² = 4π cm²

 

b)

r=3cm

P=π * (3cm)² = 9π cm²

 

c)

r=2,5

P=π * (2,5)² = 6,25π

 

Answer 2

P = πr², gdzie r to promień okręgu

 

a) P = π * 2² = 4π (cm²)

b) P = π * 3² = 9π (cm²)

c) P = π * (2,5)² = 6,25π (cm²)