Question

diameter of a circle is 70cm .how many revolution required to cover 1.65 km​

Answer 1

Answer:

750 revolutions

Step-by-step explanation:

Radius = 70/2= 35 cm

The distance covered in one revolution = circumference of the circle = 2πr

$= 2 \times \frac{22}{7} \times 35 = 220cm$

No. of revolutions to cover 220cm = 1

No. of revolutions to cover 1.65 km or 1.65 × 1000 × 100 cm = 750 revolutions

$\frac{1.65 \times 1000 \times 100}{220} = 750$

Answer 2

Answer:

750 revolution

Step-by-step explanation:

radius of circle=70/2=35cm

circumference of circle=2πr

=2*22/7*35

=220cm

1.65*1000*100/220

=750