Chapter 12 – Areas Related to Circles

In a circular table cover of radius 32 cm, a design is formed leaving an equilateral triangle ABC in the middle as shown in fig. 12.24. find the area of the design. a design is formed leaving an equilateral triangle ABC in the middle as shown in fig. 12.24. find the area of the design. [...]

From each corner of a square of side 4 cm a quadrant of a circle of radius 1 cm is cut and also a circle of diameter 2 cm is cut as shown in fig. Find the area of the remaining portion of the square. From each corner of a square of side 4 cm [...]

Find the area of the shaded region in Fig. 12.22, where a circular arc of radius 6 cm has been drawn with vertex O of an equilateral triangle OAB of side 12 cm as centre. Find the area of the shaded region in Fig. 12.22 where a circular arc of radius 6 cm has been [...]

Find the area of the shaded region in Fig. 12.21, if ABCD is a square of side 14 cm and APD and BPC are semicircles. Find the area of the shaded region in Fig. 12.21 if ABCD is a square of side 14 cm and APD and BPC are semicircles. October 6, 2020 Category: Chapter [...]

Find the area of the shaded region in fig.12.20, if radii of the two concentric circles with centre O are 7 cm and 14 cm respectively and ∠AOC=40 degree. Find the area of the shaded region in fig.12.20 if radii of the two concentric circles with centre O are 7 cm and 14 cm respectively [...]

Find the area of the shaded region in fig.12.19,if PQ=24cm,PR=7cm and O is the centre of the circle. Find the area of the shaded region in fig.12.19 if PQ=24cm PR=7cm and O is the centre of the circle. October 6, 2020 Category: Chapter 12 - Areas Related to Circles , Maths , NCERT Class 10 [...]

Tick the correct answer in the following: Area of a sector of angle p (in degrees) of a circle with radius R is Tick the correct answer in the following: Area of a sector of angle p (in degrees) of a circle with radius R is October 6, 2020 Category: Chapter 12 - Areas Related [...]

A round table cover has six equal designs as shown in figure. If the radius of the cover is 28cm, find the cost of making the design at the rate of Rs.0.35 per cm^2. (Use root 3 =1.7). A round table cover has six equal designs as shown in figure. If the radius of the [...]

To warn ships for underwater rocks, a lighthouse spreads a red coloured light over a sector of angle 80 degree to a distance of 16.5 km. Find the area of the sea over which the ships are warned. (Use π=3.14) a lighthouse spreads a red coloured light over a sector of angle 80 degree to [...]

A car has two wipers which do not overlap. Each wiper has a blade of length 25cm sweeping through an angle of 115 degree . Find the total area cleaned at each sweep of the blades. A car has two wipers which do not overlap. Each wiper has a blade of length 25cm sweeping through [...]