111.he minute hand of a clock is 10 cm long. Find the area on the face of the clock described by the minute hand between 9 A.M. and 9.35 A.M
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112.A square park has each side of 100 m. At each corner of the park, there is a flower bed in the form of a quadrant of radius 21 m as shown in the figure. Find the area of the remaining park.
Fig. 12.74
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113.Four cows are tethered at four corners of a square field of side 35 m, so that they can just reach each other. What area of the field will remain ungrazed?
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114.A horse is tethered to a corner of a field which is in the shape of an equilateral triangle of side 24 m. The length of the rope by which it is tied is 10.5 m. Find the area of the field over which it can graze. How much area remains ungrazed ?
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115.The diameter of the wheel of a vehicle is 1.4 m. The wheel makes 10 revolutions in 5 seconds. Find the speed of the vehicle.
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116.The wheel of the engine of a train in circumference makes 7 revolutions in 4 seconds. Find the speed of the train.
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117.The diameter of the wheel of a vehicle is 1.4 m. The wheel makes 10 revolutions in 5 seconds. Find the speed of the vehicle.
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118.A wheel makes 1000 revolutions in covering a distance of 88 km. Find the radius of the wheel.
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119.The diameter of a garden roller is 1.4 m and it is 2 m long. How much area will it cover in 5 revolutions?
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120.Find the distance covered by the wheel of a bicycle having radius 70 cm in making 1200 revolutions.
Short Answer Type
in circumference makes 7 revolutions in 4 seconds. Find the speed of the train.
