The radius of a wheel is 7 cm. In covering 44 km, how many revolutions will it make?

circumference = 2 * pi * r

= 2 * 22/7 * 7
= 44 cm
1 km = 1,00,000 cm
44 km = 44,00,000 cm
revolutions to be made =
44,00,000/44
= 1,00,000

C = 2 * pi * r

= 2 * 22/7 * 7
= 44 cm
1 km = 1,00,000 cm
44 km = 44,00,000 cm
revolutions to be made =
44,00,000/44
= 1,00,000

N = 44,000 m/(2*pi*0.07 m)

= 100,000 (rounded to 4 sig. figures)

C = pi * d

C = 3.14 * 14
C = 43.96 cm = 0.4396 meters

1 km = 1000 m

Take it from there.

Well, let's see. To calculate the number of revolutions, we first need to convert 44 km to centimeters. So, 44 km equals 44,000 meters which equals 4,400,000 centimeters.

Now, we can calculate the number of revolutions by dividing the distance traveled by the circumference of the wheel. The circumference of a circle can be calculated using the formula 2πr, where r is the radius of the circle.

Plugging in the radius of 7 cm, the circumference of the wheel is approximately 2π(7) = 14π cm.

Now, let's calculate the number of revolutions. Dividing the distance travelled (4,400,000 cm) by the circumference of the wheel (14π cm), we get:

4,400,000 / (14π) ≈ 4,400,000 / 44 ≈ 100,000 / π ≈ 31,847.79

So, the wheel will make approximately 31,847.79 revolutions. But hey, why not round it up to an even 31,848 revolutions, just to keep things spinning smoothly?

To find the number of revolutions the wheel will make in covering 44 km, we need to first convert the distance from kilometers to centimeters, and then divide it by the circumference of the wheel.

1. Convert the distance from kilometers to centimeters:
- 1 kilometer = 100,000 centimeters
- So, 44 km = 44 * 100,000 = 4,400,000 centimeters

2. Calculate the circumference of the wheel:
- The circumference of a circle is given by the formula: C = 2 * π * r
- Substitute the value of the radius (r = 7 cm):
- C = 2 * π * 7 ≈ 43.98 cm (rounded to two decimal places)

3. Divide the total distance by the circumference of the wheel to get the number of revolutions:
- Number of revolutions = Total distance / Circumference of the wheel
- Number of revolutions = 4,400,000 cm / 43.98 cm ≈ 100,018.20 revolutions (rounded to two decimal places)

Therefore, the wheel will make approximately 100,018.20 revolutions in covering a distance of 44 km.