Question

33. A bicycle wheel has a radius of 70 cm. What distance in kilometres does the wheel cover after 2 000 revolutions? (Take π = 22/7​

Answer 1

Resposta:  8,792Km

Explicação passo a passo:

π=22/7

π=3,14

C=2*π*r

C=2*3,14*70

C=6,28*70

C=439,6cm

Multiplicação

2000*439,6=

879200cm

Divisão

879200/100000=

8,792

Answer 2

Resposta:

$\textsf{Segue a resposta abaixo}$

Explicação passo-a-passo:

$\mathsf{ r=70cm=0{,}0007km}$

$\mathsf{C=2\cdot\pi\cdot r }$

$\mathsf{ C=2\cdot\dfrac{22}{7}\cdot0{,}0007}$

$\mathsf{ C= 0{,}00 44 km}$

$\mathsf{x=2000\cdot 0{,}00 44 }$

$\boxed{\boxed{\mathsf{x= 8{,}8km }}}$