The area of a sector of a circle bounded by an arc of length 5π cm is equal to 20π cm^{2}, then its radius is
Area of the largest triangle that can be inscribed in a semicircle of radius r units is
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The ratio of area of two circles whose ratio of circumference is 3:1 will be
It is proposed to build a single circular park equal in area to the sum of areas of two circular parks of diameters 16 m and 12 m in a locality. The radius of the new park would be
ABC is an equilateral triangle. The area of the shaded region if the radius of each of the circle is 1 cm, is
The area of the square that can be inscribed in a circle of radius 8 cm is
ABCDEF is any hexagon with different vertices A, B, C, D, E and F as the centres of circles with same radius r are drawn. The area of the shaded portion is
The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is
The diameter of a wheel is 1 m. The number of revolutions it will make to travel a distance of 22 km will be
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116 videos420 docs77 tests
