Advertisements
Advertisements
प्रश्न
Value of π is ______ approximately.
Advertisements
उत्तर
Value of π is 3.14 approximately.
Explanation:
Value of π is `22/7` = 3.14 approximately.
APPEARS IN
संबंधित प्रश्न
A gardener wants to fence a circular garden of diameter 21 m. Find the length of the rope he needs to purchase, if he makes 2 rounds of fence. Also find the costs of the rope, if it cost ₹ 4 per meter. (Take `pi = 22/7`)
The wheel of a motorcycle is of radius 35 cm. How many revolutions per minute must the wheel make so as to keep a speed of 66 km/hr ?
Find the volume and the surface area of the spheres in the following :
Diameter= 6.3 cm
A cylindrical bucket, whose base radius is 20 cm, is filled with water to a height of 25 cm. A heavy iron spherical ball of radius 10 cm is dropped to submerge completely in water in the bucket. Find the increase in the level of water.
The inner circumference of a circular track is 264 m and the width of the track is 7 m. Find:
(i) the radius of the inner track.
(ii) the radius of the outer circumference.
(iii) the length of the outer circumference.
(iv) the cost of fencing the outer circumference at the rate of ₹50 per m.
If the perimeter of a semi-circular protractor is 36 cm. Find its diameter.
The sum of the circumference and diameter of a circle is 176 cm. Find the area of the circle.
A race track is in the form of a circular ring whose outer and inner circumferences are 396 m and 352 m respectively. The width of the track is ____________.
The numerical value of the area of a circle is greater than the numerical value of its circumference. Is this statement true? Why?
ABCD is a given rectangle with length as 80 cm and breadth as 60 cm. P, Q, R, S are the midpoints of sides AB, BC, CD, DA respectively. A circular rangoli of radius 10 cm is drawn at the centre as shown in the following figure. Find the area of shaded portion.
