The circumference of each of Jay's bike wheels is 50 cm. How many rotations will Jay make in 1 km? Explain how you calculated your answer. When would this info matter to jay?
100 000 ÷ 50 = 2000 Therefore Jay’s bike will make 2000 rotations in 1 km.
First I converted 1 km to centimeters because in order to divide 1 kilometer by 50cm, I had to make them the same unit which will lead me too an accurate answer. After this, I divided 100 000 cm (1 kilometre) by 50 cm (circumference of the wheel) giving me a total of 2000.
This information would matter to Jay if he wanted to find out how much time he will need to get to that certain place using his bike. First he would need to find out how much seconds it takes for the wheel to rotate once around and then multiply it by how much time the wheel would turn in 1 km (2000 times). The answer for this would be the time needed to get to this place with his bike.
Ivana B.
ReplyDelete1 kilometers in cm = 100 000 cm
100 000 ÷ 50 = 2000
Therefore Jay’s bike will make 2000 rotations in 1 km.
First I converted 1 km to centimeters because in order to divide 1 kilometer by 50cm, I had to make them the same unit which will lead me too an accurate answer. After this, I divided 100 000 cm (1 kilometre) by 50 cm (circumference of the wheel) giving me a total of 2000.
This information would matter to Jay if he wanted to find out how much time he will need to get to that certain place using his bike. First he would need to find out how much seconds it takes for the wheel to rotate once around and then multiply it by how much time the wheel would turn in 1 km (2000 times). The answer for this would be the time needed to get to this place with his bike.