Advertisements
Advertisements
प्रश्न
The diameter of a circular field is 56 m. Find its circumference and cost of fencing it at the rate of ₹80 per m. (Take π =`22/7`)
Advertisements
उत्तर
Given, Diameter of a circular field = 56 m
∴ Radius =`56/2` = 28 m
Circumference of the circle = 2πr
= `2xx22/7xx28` m
= 2 × 22 × 4 m
= 176 m
The cost of fencing 176 m is,
= 176 m × ₹80 per m
= ₹14,080
APPEARS IN
संबंधित प्रश्न
The inner circumference of a circular track is 220 m. The track is 7m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of j – 2 per metre. (Use π = 22/7)
The perimeter of a sector of a circle of radius 5.2 cm is 16.4 cm. Find the area of the sector.
Find the area of circle whose circumference is 44 cm.
A horse is placed for grazing inside a rectangular field 40m by 36m and is tethered to one corner by a rope 14m long. Over how much area can it graze.
Find the circumferences of a circle whose radius is 7 cm.
A race track is in the form of a rig whose inner circumference is 352 m and outer circumference is 396 m. Find the width and the area of the track.
In the given figure, OPQR is a rhombus, three of whose vertices lie on a circle with centre O. If the area of the rhombus is `32sqrt(3)`, find the radius of the circle.
The difference between the circumference and radius of a circle is 37 cm. The area of the circle is
Find the diameter of a circle whose circumference is equal to the sum of circumference of circles with radius 10 cm, 12 cm, and 18 cm.
Diameters of different circles are given below. Find their circumference (Take π = `22/7`)
d = 28 mm
