Advertisements
Advertisements
प्रश्न
In circle of radius 6cm, chord of length 10 cm makes an angle of 110° at the centre of circle find Area of the circle
उत्तर
Radius of circle (r) = 6 cm
Area of circle = 𝜋r2 =`22/7`× 6 × 6
=`792/7 cm^2`
APPEARS IN
संबंधित प्रश्न
A brooch is made with silver wire in the form of a circle with diameter 35 mm. The wire also used in making 5 diameters which divide the circle into 10 equal sectors as shown in Fig. Find:
(i) the total length of the silver wire required
(ii) the area of each sector of the brooch
Find the circumference of the circle with the following radius: (Take `bb(pi = 22/7`)
14 cm
A square ABCD is inscribed in a circle of radius r. Find the area of the square.
The wheels of the locomotive of a train are 2.1 m in radius. They make 75 revolutions in one minute.
In the given figure, ABCD is a trapezium of area 24.5 cm2 , If AD || BC, ∠DAB = 90°, AD = 10 cm, BC = 4 cm and ABE is quadrant of a circle, then find the area of the shaded region.
PQRS is a diameter of a circle of radius 6 cm. The lengths PQ, QR and RS are equal. Semicircles are drawn with PQ and QS as diameters, as shown in the given figure. If PS = 12 cm, find the perimeter and area of the shaded region.
The base circumferences of two cones are the same. If their slant heights are in the ratio 5 : 4, find the ratio of their curved surface areas.
Find the circumference of a circle whose area is 81πcm2.
Areas of two circles are equal. Is it necessary that their circumferences are equal? Why?
The moon is about 384000 km from earth and its path around the earth is nearly circular. Find the length of path described by moon in one complete revolution. (Take π = 3.14)
