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If a square is inscribed in a circle, then the ratio of their areas is
In the given figure, O is the centre of the circle, and AC is its diameter. Another circle with AB as diameter is drawn. If AC = 54 cm and BC = 10 cm, the area of shaded portion will be
If PQRS is a square of side 14 cm and PAQ and SAR are semicircles, then the area of the shaded region is
What is the area of the square inscribed in a circle with a circumference of 18.84 cm?
A park is in the form of a rectangle 120m by 90 m. At the centre of the park there is a circular lawn as shown in the figure. If the area of the park excluding the lawn is 2950 m^{2}, then the radius of the circular lawn will be
Calculate the area of the designed region in the given figure common between the two quadrants of circles of radius 8 cm each.
From a circular sheet of paper with a radius 20 cm, four circles of radius 5 cm each are cut out. What is the ratio of the uncut to the cut portion?
A momento is made as shown in the figure. Its base, shade is to be silver plated from the front at the rate of rs 20 per cm^{2}. What is the total cost of silver plating?
In given figure, a circle of radius 7.5cm is inscribed in a square, the remaining area of the square is
120 videos463 docs105 tests

120 videos463 docs105 tests
