Question

Oblicz pole i obwod kola o srednicy:30cm,60cm,90cm,10cm,80cm,120cm,100cm,14cm,64cm,82cm,112cm,36cm(bardzo prosze o wyniki wraz z obliczeniami)

Answer 1

średnica = d = 30cm
promień = r = d/2 =  30 / 2 = 15 cm

P= πr²

P = π × 15²

P = 225πcm²

 

Obwód = l

l= dπ

l=30π cm

 

d= 60cm

r = d/2

r = 60 / 2

r = 30

P= πr²

P = π × 30²

p = 900π cm²

 

l= dπ

l=60π cm

 

d=90cm

r= d/2

r= 90 / 2

r= 45 cm

P= πr²

P = π × 45²

P = 2025π cm²

 

l= dπ

l= 90π cm

 

d=10cm

r= d/2

r= 10/2

r=5 cm

P= πr²

P= π × 5²

P= 25π cm²

 

l= dπ

l=10π cm

 

d=80 cm

r= d/2

r= 80/2

r= 40 cm

P= πr²

P = π × 40²

P= 1600π cm²

 

l= dπ

l-80π cm

 

d=120cm

r= d/2

r= 120/2

r=60 cm

P= πr²

P= π × 60²

P=3600π cm²

 

l= dπ

l= 120π cm

 

d=100cm

r=d/2

r=100/2

r=50 cm

P= πr²

P= π × 50²

P= 2500π cm²

 

l= dπ

l=100πcm

 

d=14cm

r=d/2

r=14/2

r=7cm

P= πr²

P= π × 7²

P= 49π cm²

 

l= dπ

l=14πcm

 

d=64cm

r=d/2

r= 64/2

r= 32 cm

P= πr²

P= π × 32²

P= 1024π cm²

 

l= dπ

l=64π cm

 

d=82cm

r=d/2

r=82cm/2

r=41 cm

P= πr²

P= π × 41²

P=1681π cm²

 

l= dπ

l=82π cm

 

d=112cm

r=d/2

r= 112/2

r= 56

P= πr²

P= π × 56²

P= 3136π cm²

 

l= dπ

l=112π cm

 

d= 36 cm

r=d/2

r=36/2

r= 18 cm

P= πr²

P = π × 18²

P= 324π cm²

 

l= dπ

l=36π cm

 

Myśle że pomogłam ;)