Advertisements
Advertisements
प्रश्न
Is the area of the circle inscribed in a square of side a cm, πa2 cm2? Give reasons for your answer.
उत्तर
Let a be the side of square.
We are given that the circle is inscribed in the square.
Diameter of circle = Side of square = a
Radius of the circle = `"a"/2`
Area of the circle = πr2
= `π("a"/2)^2`
= `(π"a"^2)/4` cm2
Hence, area of the circle is `(π"a"^2)/4` cm2
Thus the area of the circle inscribed in a square of side a cm is not a2 cm2
APPEARS IN
संबंधित प्रश्न
Each of the equal sides of an isosceles triangle measure 2 cm more than its height, and the base of the triangle measure 12 cm. Find the area of the triangle.
A room is 16 m long and 13.5 m broad. Find the cost of covering its floor with 75-m-wide carpet at ₹ 60 per metre.
A 36-m-long, 15-m-borad verandah is to be paved with stones, each measuring 6dm by 5 dm. How many stones will be required?
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, the square ABCD is divided into five equal parts, all having same area. The central part is circular and the ines AE, GC, BF and HD lie along the diagonals AC and BD of the square. If AB = 22 cm, find:
the circumference of the central part.
In the following figure, AB = 36 cm and M is mid-point of AB. Semi-circles are drawn on AB, AM and MB as diameters. A circle with centre C touches all the three circles. Find the area of the shaded region.
The area of the largest triangle that can be inscribed in a semi-circle of radius r, is
A piece of wire of length 108 cm is bent to form a semicircular arc bounded by its diameter. Find its radius and area enclosed.
A sprinkler placed at the centre of a flower garden sprays water covering a circular area. If the area watered is 1386 cm2, find its radius and diameter
Area of circle of radius ‘n’ units is