Advertisements
Advertisements
प्रश्न
Find the area of the following circle, given that diameter = 49 m.
Advertisements
उत्तर
Here, diameter = 49 m
∴ Radius r = `49/2 m`
∴ Area of circle = πr2
= `22/7 xx (49/2)^2`
= `22/7 xx 49/2 xx 49/2`
= `3773/2`
= 1886.5 m2
APPEARS IN
संबंधित प्रश्न
Find the area of the following circles, given that radius = 5 cm.
Find the perimeter of the adjoining figure, which is a semicircle including its diameter.
Find the area and perimeter of a square plot of land whose diagonal is 24 m long. [Take `sqrt(2) = 1.41`.]
In the following figure, ABCD is a square of side 2a, Find the ratio between
(i) the circumferences
(ii) the areas of the in circle and the circum-circle of the square.
If the numerical value of the area of a circle is equal to the numerical value of its circumference , find its radius.
The perimeter of a triangle is 30 cm and the circumference of its incircle is 88 cm. The area of the triangle is
If the circumference of a circle increases from 4π to 8π, then its area is
A circular disc of radius 6 cm is divided into three sectors with central angles 90°, 120° and 150°. What part of the whole circle is the sector with central angle 150°? Also, calculate the ratio of the areas of the three sectors.
Find the area of the segment shown in Fig. 2, if the radius of the circle is 21 cm and ∠AOB = 120° `( "Use" π = (22)/(7))`
A pendulum swings through an angle of 30∘ and describes an arc 8.8 cm in length. Find the length of the pendulum in cm.
