Advertisements
Advertisements
प्रश्न
Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is ______.
विकल्प
2πn
πm2
πp2
πn2
Advertisements
उत्तर
Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is `bb(underline(πn^2))`.
Explanation:
Given, diameter = m, radius = n and circumference = p
∴ Area of circle = πr2 = πn2
APPEARS IN
संबंधित प्रश्न
The perimeter of a rectangular plot of land is 80 m and its breadth is 16 m. Find the length and area of the plot.
The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.
Two circular pieces of equal radii and maximum area, touching each other are cut out from a rectangular card board of dimensions 14 cm × 7 cm. Find the area of the remaining card board. (Use π = 22/7).
In a circle of radius 10 cm, an arc subtends an angle of 108° at the centre. what is the area of the sector in terms of π?
If a square is inscribed in a circle, what is the ratio of the areas of the circle and the square?
If he area of a sector of a circle is \[\frac{7}{20}\] of the area of the circle, then the sector angle is equal to
A rope by which a cow is tethered is increased from 16 m to 23 m. How much additional ground does it have now graze?
A horse is tethered to one corner of a field which is in the shape of an equilateral triangle of side 12 m. If the length of the rope is 7 m, find the area of the field which the horse cannot graze. Write the answer correct to 2 places of decimal.
A square is inscribed in a circle of radius 6 cm. Find the area of the square. Give your answer correct to two decimal places if `sqrt(2)` = 1.414.
If the radius of a semi-circular protractor is 7cm, then its perimeter is ______.
