611.In fig. 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 cm, find the area of the shaded region.
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612.A toy is in the form of a cone mounted on a hemisphere of radius 3.5 cm. If the total height of the toy is 15.5 cm, find its total surface area.
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613.In fig. AB is a diameter of the circle with centre O and OA = 7 cm. Find the area of the shaded region
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614.If the radii of the circular ends of a conical bucket, which is 45 cm high, are 28 cm and 7
cm, find the capacity of the bucket,
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615.A horse is tethered to one comer of a field which is in the shape of an equilateral triangle of side 12 m. If the length of the rope is 7 m, find the area of the field which the horse cannot graze
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616.A cylindrical tub of radius 5 cm and length 9.8 cm is full of water. A solid in the form of a right circular cone mounted on a hemisphere is immersed into the tub. If the radius of the hemisphere is 3.5 cm and height of cone outside the hemisphere is 5 cm, find the volume of water left in the tub (Take = 22/7).
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617.The inside perimeter of a running track as shown in fig. is 340 m. The length of each of the straight portions is 60 m and the curved portions are semicircles. If the track is 7 m wide, find the area of the track
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618.A toy is in the form of a cone mounted on a hemisphere of diameter 7 cm The total height of the toy is 14.5 cm. Find the volume and the total surface area of the toy. (Take = 22/7).
619.The minute hand of a clock is 12 cm long. Find the area on the face of the clock described by the minute hand in 35 minutes ( = 22/7).
Solution is not provided.
Ans. 264 cm2
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620.Three horses are tethered at 3 comers of a triangular plot having sides 20m, 30m, 40m, with ropes of 7m length each. Find the area of this plot which can be grazed by the horses (Take = 22/7).
Short Answer Type
= 22/7).
= 22/7).
= 22/7).
= 22/7).
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