Advertisements
Advertisements
प्रश्न
Area of a circle with diameter ‘m’ radius ‘n’ and circumference ‘p’ is ______.
पर्याय
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 length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.
A rectangular park is 100 m by 50 m. It is surrounding by semi-circular flower beds all round. Find the cost of levelling the semi-circular flower beds at 60 paise per square metre (use π = 3.14).
In the following figure, OE = 20 cm. In sector OSFT, square OEFG is inscribed. Find the area of the shaded region.
In the following figure, an equilateral triangle ABC of side 6 cm has been inscribed in a circle. Find the area of the shaded region. (Take π = 3.14).
In the following figure, O is the centre of a circular arc and AOB is a straight line. Find the perimeter and the area of the shaded region correct to one decimal place. (Take π = 3.142)
From a thin metallic piece, in the shape of a trapezium ABCD, in which AB || CD and ∠BCD = 90°, a quarter circle BEFC is removed (in the following figure). Given AB = BC = 3.5 cm and DE = 2 cm, calculate the area of the remaining piece of the metal sheet.
The radii of two circles are 8 cm and 6 cm. Find the radius of the circle having area equal to the sum of the areas of the two circles.
Find the area of a ring whose outer and inner radii are respectively 23 cm and 12 cm.
In figure, a square of diagonal 8 cm is inscribed in a circle. Find the area of the shaded region.
Area of the circle obtained in 196 m2 is ______.
