Question

a bike's wheel makes 1,500 revolution in moving 30km find the diameter of the wheel ​

Answer 1

Answer:

Diameter = 6.36m

Step-by-step explanation:

30km = 30000m

30000/1500 = 20m = Circumference of the wheel

2πr = 20m

πr = 10m

r = 10/3.14 = 3.18

∴ The diameter measures 3.18*2 = 6.36 as the Diameter is twice the raduis

Answer 2

Answer:

Revolutions by the wheel = 1500 to

Move 30km = 30000m

Step-by-step explanation:

In one revoultion, 30000/1500 = 20m

Circumference=20m=2πr

44/7(r)=20

r=20/44 × 7

r=5/11 × 7

r=35/11=3.18m

d=2r=3.182 × 2

d=6.364m