Advertisements
Advertisements
Question
Thenmozhi wants to level her circular flower garden whose diameter is 49 m at the rate of ₹ 150 per m2 Find the cost of levelling
Advertisements
Solution
Diamter of the circular garden d = 49 m
Radius r = `"d"/2 = 49/2` m
Area of the circular garden = πr2 sq.units
= `22/7 xx 49/2 xx 49/2 "m"^2`
= 1,886.5 m2
Cost of levelling a m2 area = ₹ 150
∴ Cost of levelling 1886.5 m2 = ₹ 150 × 1886.5
= ₹ 2,82,975
Cost of levelling the flower garden = ₹ 2,82,975
APPEARS IN
RELATED QUESTIONS
A square of diagonal 8 cm is inscribed in a circle. Find the area of the region lying outside the circle and inside the square.
In the following figure, from a rectangular region ABCD with AB = 20 cm, a right triangle AED with AE = 9 cm and DE = 12 cm, is cut off. On the other end, taking BC as diameter, a semicircle is added on outside' the region. Find the area of the shaded region. [Use π =]`22/7` [CBSE 2014]
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 perimeter of a semi-circular protractor is 36 cm, then its diameter is
In the given figure, O is the centre of the bigger circle, and AC is its diameter. Another circle with AB as diameter is drawn. If AC = 54 cm and BC = 10, find the area of the shaded region.
Find the area of the shaded region in the given figure, where a circular arc of radius 6 cm has been drawn with vertex of an equilateral triangle of side 12 cm as centre and a sector of circle of radius 6 cm with centre B is made.
The area of a sector of a circle with radius r, making an angle of x° at the centre is
The radii of the inner and outer circumferences of a circular running track are 63 m and 70 m respectively. Find :
(i) the area of the track ;
(ii) the difference between the lengths of the two circumferences of the track.
The floor of the circular swimming pool whose radius is 7 m has to be cemented at the rate of ₹ 18 per m2. Find the total cost of cementing the floor
The area (in cm2) of the circle that can be inscribed in a square of side 8 cm is ____________.
