Advertisements
Advertisements
प्रश्न
Find the area of the dining table whose diameter is 105 cm
Advertisements
उत्तर
Diameter of the dinig table (d) = 105 cm
∴ Radius r = `"d"/2`
= `105/2` cm
Area of the circle = πr2
= `22/7 xx 105/2 xx 105/2`
= 8662.5 sq.cm
Area of the dinning table = 8662.5 cm2
APPEARS IN
संबंधित प्रश्न
AB is a chord of a circle with centre O and radius 4 cm. AB is of length 4 cm. Find the area of the sector of the circle formed by chord AB.
Find the ratio of the area of the circle circumscribing a square to the area of the circle inscribed in the square .
A circular park has a path of uniform width around it. The difference between the outer and inner circumferences of the circular path is 132 m. Its width is
If the radius of a circle is diminished by 10%, then its area is diminished by
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
The cost of fencing a circular field at the rate of Rs 25 per metre is Rs 5500. The field is to be ploughed at the rate of 50 paise per m2 . Find the cost of ploughing the field. [Take `π =22/7`].
In the given figure, ∆ABC is right-angled at A. Find the area of the shaded region if AB = 6 cm, BC = 10 cm and O is the centre of the incircle of ∆ABC.
The given figures show a rectangle ABCD inscribed in a circle as shown alongside.
If AB = 28 cm and BC = 21 cm, find the area of the shaded portion of the given figure.
A roller has a diameter of 1.4 m. Find :
(i) its circumference ;
(ii) the number of revolutions it makes while travelling 61.6 m.
Find the area enclosed between two concentric circles of radii 6.3cm and 8.4cm. A third concentric circle is drawn outside the 8.4cm circle. So that the area enclosed between it and the 8.4cm circle is the same as that between the two inner circles. Find the radii of the third circle correct to two decimal places.
