A wheel with diameter 42 cm makes 20 revolutions. How much distance does it cover???
Answers
Answered by
22
diameter is 42cm
radius is d/2
radius is 42/2
equals 21
circumference equals 2πr
equals 2×22/7×21
equals 44×3
equals 132
No of revolution is 20
distance covered is 132×20
equals 2640(ans)
radius is d/2
radius is 42/2
equals 21
circumference equals 2πr
equals 2×22/7×21
equals 44×3
equals 132
No of revolution is 20
distance covered is 132×20
equals 2640(ans)
Answered by
14
diameter = 42
radius = 42/2 = 21
total revolution = 20
so, distance cover in 1 revolution = 2×22/7×21
= 132
now, distance cover in 20 revolution = 20 ×132
=2640cm
radius = 42/2 = 21
total revolution = 20
so, distance cover in 1 revolution = 2×22/7×21
= 132
now, distance cover in 20 revolution = 20 ×132
=2640cm
Similar questions