Question

the diameter of a wheel is 98 cm. 1.how many times will it rotate to cover 7.7 km? 2.find the distance covered by the wheel in 1000 revolutions.​

Answer 1

Answer:

d = 98 cm .

circumference of circle =

$\pi \: d$

== 22/7 × 98

== 22 × 14

== 308 cm .

1) = 7.7 km == 7700 cm

= 7700 ÷ 308

=== 25 times .

2) distance covered by the wheel in 1000 revolutions == 308 ÷ 1000

= 3.24 km

=