Advertisements
Advertisements
प्रश्न
The diameter of the wheel of a car is 70 cm. How many revolutions will it make to travel one kilometer?
Advertisements
उत्तर
The circumference of a circle is given by:
Circumference = π × Diameter.
Here, the diameter of the wheel is 70 cm. Substituting the value of π ≈ 3.1416
Circumference = 3.1416 × 70 = 219.91 cm
Since 1 km = 1000 m = 1000 × 100 = 100,000 cm, the total distance to be traveled is:
1 km = 100,000 cm.
The number of revolutions is the total distance divided by the circumference of the wheel:
Number of revolutions = `("Total distance")/("Circumference") = 100000/219.91`
Number of revolutions ≈ 454.74.
The wheel will make approximately 455 revolutions to travel 1 km.
APPEARS IN
संबंधित प्रश्न
If the area of a rhombus is 112 cm2 and one of its diagonals is 14 cm, find its other diagonal.
The adjacent sides of a parallelogram are 15 cm and 10 cm. If the distance between the longer sides is 6 cm, find the distance between the shorter sides.
The area of a rhombus is 84 cm2 and its perimeter is 56 cm. Find its height.
Find the area of a right-angled triangle whose hypotenuse is 13 cm long and one of its legs is 12 cm long.
Find the base of a triangle whose area is 360 cm2 and height is 24 cm.
The area of an equilateral triangle is (`64xxsqrt3`) cm2. Find the length of each side of the triangle.
The diameter of a circle is 20 cm. Taking π = 3.14, find the circumference and its area.
The ratio between the radius of two circles is 5 : 7. Find the ratio between their:
(i) circumference
(ii) areas
The diameter of every wheel of a car is 63 cm. How much distance will the car move during the 2000 revolutions of its wheel.
The length and breadth of a rectangular paper are 35 cm and 22 cm. Find the area of the largest circle which can be cut out of this paper.
