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Solved Examples
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e   A circular park of radius 31 m has a path of width 4 m along the inner circumference. What is the area of the path?   e View Solution
e   What is the area of the circle with a circumference of 38 ft? [Use π = 3.14]
   e
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e   The diameter of a small pizza is 10 inches. What is its area? [Use π = 3.14.]   e View Solution
e   What is the area of a circular field with a radius of 1.6 yd?
[Use π = 3.14.]
   e
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e   The circumference of a circular swimming pool at its bottom is 69 ft. What is the area of the bottom of the pool?[Use π = 3.14.]
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e   A goat is tethered to a stake with a 5 m rope. The goat can graze to the full length of the rope and 360° around the stake. What is the area of the circle in which the goat can graze?
[Use π = 3.14.]
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e   A circular cake is cut into equal pieces in such a way that each piece makes an angle of 15o at the center. Find the number of pieces that are cut.
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e   Henry used a compass to draw a circle. If the point of the compass is 7 cm from the point of the pencil, then what is the area of the circle? (Use 3.14 for π.)   e View Solution
e   What is the area of a disk, if its diameter is 12 in.?   e View Solution
e   The diameter of a nickel is 22 mm. Estimate the area of the nickel to the nearest millimeter. [Use π = 3.]   e View Solution
e   What is area of the figure, if r is 3 in.?   e View Solution
e   If the radius of a circle is increased by 2 times, then by how many times will its area increase?   e View Solution
e   The diameter of a small pizza is 8 inches. What is its area? [Use π = 3.14.]   e View Solution
e   The circumference of a circular swimming pool at its bottom is 93 ft. What is the area of the bottom of the pool?[Use π = 3.14.]
   e
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e   The diameter of a nickel is 23 mm. Estimate the area of the nickel to the nearest millimeter. [Use π = 3.]   e View Solution
e   What is the area of the circle with a circumference of 30 ft? [Use π = 3.14]
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e   A circular park of radius 49 m has a path of width 5 m along the inner circumference. What is the area of the path?   e View Solution
e   The diameter of a small pizza is 6 inches. What is its area? [Use π = 3.14.]   e View Solution
e   What is the area of a circular field with a radius of 1.9 yd?
[Use π = 3.14.]
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e   The circumference of a circular swimming pool at its bottom is 99 ft. What is the area of the bottom of the pool?[Use π = 3.14.]
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e   What is the radius of the circle?   e View Solution
e   What is the area of the colored region in the figure?
[Use π = 3.14.]   e
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e   What is the area of the colored region in the figure?
[Use π = 3.14.]
   e
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e   A goat is tethered to a stake with a 3 m rope. The goat can graze to the full length of the rope and 360° around the stake. What is the area of the circle in which the goat can graze?
[Use π = 3.14.]
   e
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e   A circular cake is cut into equal pieces in such a way that each piece makes an angle of 30o at the center. Find the number of pieces that are cut.
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e   Ethan used a compass to draw a circle. If the point of the compass is 7 cm from the point of the pencil, then what is the area of the circle? (Use 3.14 for π.) ccc View Solution
ccc What is the area of a disk, if its diameter is 14 in.? ccc View Solution
ccc The diameter of a nickel is 25 mm. Estimate the area of the nickel to the nearest millimeter. [Use π = 3.] ccc View Solution
ccc A semicircle is cut out of a square as shown. What is the area of the resulting figure?
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ccc If you require 320 ft of fence to enclose the children's playground, then what is the maximum area of the playground?
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ccc What is the area of the colored region in the figure? ccc View Solution
ccc What is area of the figure, if r is 5 in.? ccc View Solution
ccc If the radius of a circle is increased by 4 times, then by how many times will its area increase? ccc View Solution
ccc What is the area of the shaded region in the figure?
[Use π = 3.14] ccc
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ccc What is the area of the colored region in the figure?
[Use π = 3.14.] ccc
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ccc What is the area of the colored region in the figure?
[Use π = 3.14.]
 ccc
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ccc A semicircle is cut out of a square as shown. What is the area of the resulting figure?
 ccc
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ccc What is the area of the colored region in the figure? ccc View Solution
ccc What is area of the figure, if r is 2 in.? ccc View Solution