Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
The radius of the sector of the circle, r = 7 cm
Measure of arc of the sector = θ = 30º
∴ Area of the sector = \[\frac{\theta}{360°} \times \pi r^2 = \frac{30°}{360°} \times \frac{22}{7} \times \left( 7 \right)^2\] = 12.83 cm2
APPEARS IN
संबंधित प्रश्न
In Fig 4, a circle is inscribed in an equilateral triangle ABC of side 12 cm. Find the radius of inscribed circle and the area of the shaded region.[Use π=3.14 and √3=1.73]

ABC is an isosceles right-angled triangle with ∠ABC = 90°. A semi-circle is drawn with AC as the diameter. If AB = BC = 7 cm, find the area of the shaded region. [Take π = 22/7]

Below fig shows a sector of a circle, centre O. containing an angle 𝜃°. Prove that Perimeter of shaded region is 𝑟 (tan 𝜃 + sec 𝜃 +`(pitheta)/180`− 1)
In the given figure,
\[\square\] PQRS is a rectangle. If PQ = 14 cm, QR = 21 cm, find the areas of the parts x, y, and z.

Two circular pieces of equal radii and maximum area, touching each other are cut out from a rectangular cardboard of dimensions 14 cm ⨯ 7 cm. Find the area of the remaining cardboard.
Find the area of a quadrant of a circle whose circumference is 88 cm.
The side of a square is 10 cm. Find the area of the circumscribed circle. [π = 3.14]
The difference between the circumference and radius of a circle is 37 cm. The area of the circle is
If the perimeter of a square is equal to the circumference of a circle then the ratio of their areas is
Diameter of the circular garden is 42 m. There is a 3.5 m wide road around the garden. Find the area of the road.

A wire is in the form of a circle of radius 42 cm. It is bent into a square.
Determine the side of the square and compare the area of the regions enclosed in two cases.
Find the volume and the surface area of the spheres in the following :
Radius= 2.1 cm
A cylindrical beaker of 7 cm diameter is partly filled with water. Determine the number of spherical marbles of diameter 1.4 cm that are to be submerged in it to raise the water level by 5.6 cm
The circumference of a given circular park is 55 m. It is surrounded by a path of uniform width of 3.5 m. Find the area of the path.
If the circumference of a circle is 176 cm, find its radius.
Find the area and perimeter of the circles with following: Radius = 2.8cm
A cart wheel makes 9 revolutions per second. If the diameter of the wheel is 42cm, find its speed in km per hour. (Answer correct to the nearest km)
The diameter of a cycle wheel is `4(5)/(11)"cm"`. How many revolutions will it make in moving 6.3km?
The circumference of a circle is equal to the perimeter of a square. The area of the square is 484 sq.m. Find the area of the circle.
The area of a quadrant of a circle whose circumference is 22 cm, is ____________.
