2.
The diameter of the wheel of a car is 77 cm. How far will it go in
20 turns?
Answers
Answered by
3
Answer:
4840 cm (48.4 m)
Step-by-step explanation:
d =77
r = 77/2
distance covered in 20 turns = 20 x circumference of the wheel
= 20 x 2 x 22/7 x 77/2
= 4840 cm
= 48.4 m
Answered by
2
Answer:
4840 cm
Step-by-step explanation:
Diameter = 77cm
Radius = 77/2 cm
Circumference = 2πr or πd
= 2 x 22 / 7 x 77 / 2 or 22/7 x 77
= 11 x 22 or 11 x 22
= 242cm
In one turn the wheel rotates and completes a distance which is equal to its circumference
∴ distance travelled in 1 turn = 242 cm
distance travelled in 20 turns = 20 x 242
= 4840cm
∴ the car will go 4840cm in 20 turns
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