Advertisements
Advertisements
प्रश्न
The diameter of the bullock cart wheel is 1.4 m. Find the distance covered by it in 150 rotations?
Advertisements
उत्तर
Diameter of the bullock cart wheel d = 1.4 m
Distance covered in 1 rotation = Its circumference
= πd units
= `22/7 xx 1.4 "m"`
= 22 × 0.2
= 4.4 m
Distance covered in one rotation = 4.4 m
Distance covered in 150 rotations = 4.4 × 150 = 660.0
Distance covered in 150 rotations = 660 m
APPEARS IN
संबंधित प्रश्न
An elastic belt is placed round the rim of a pulley of radius 5 cm. One point on the belt is pulled directly away from the centre O of the pulley until it is at P, 10 cm from O. Find the length
of the belt that is in contact with the rim of the pulley. Also, find the shaded area.
Find the diameter of the circle whose area is equal to the sum of the areas of two circles having radii 4 cm and 3 cm.
The sum of the radii of two circles is 7 cm, and the difference of their circumferences is 8 cm. Find the circumference of the circles.
Four equal circles, each of radius a units, touch each other. Show that the area between them is `(6/7 a^2)` sq units.
Find the area and perimeter of the following sector :
Diameter = 42 cm, angle at the centre is 100·.
AC and BD are two perpendicular diameter of a circle ABCD. Given that the area of shaded portion is 308 cm2 calculate:
(i) The length of AC and
(ii) The circumference of circle
Find the area and perimeter of the following semicircles: Radius = 1.4cm
The wheel of a car makes 10 revolutions per second. If its diameter is 70cm, find the speed of the car in km per hr.
The radius of a circular plot is 7.7 metres. How much will it cost to fence the plot with 3 rounds of wire at the rate of 50 rupees per metre?
If the circumference of a circle is 352 metres, then its area in square metres is ____________.
