Question

2. A wheel has a radius a 35cm. Find the
circumference of the wheel
(3) A wheel has a diameter of 25cm How far does it travel in 7 revolutions (22/7)
4. A wheel has a diameter of 63 cm- How many
revolutions does it take to travel a distance
of 1386cm ​

Answer 1

Answer:-

2.circumference =2πr

=2×22/7×35

=220cm

3.Diameter =25cm

radius= 25/2cm

It's circumference=2πr

=2×22/7×25/2

= 550/7cm

therefore,

distance covered in 7 revolution=550/7×7

=550 cm

4. diameter = 63cm

radius= 63/2cm

circumference=2πr

=2 ×22/7 ×63/2

=198cm

therefore,

No. of revolutions= 1386/198

=7