Lakshya Education MCQs

Question: A triangle with sides 13 cm, 14 cm and 15 cm is inscribed in a circle. The radius of the circle is :
Options:
A.2 cm
B.3 cm
C.4 cm
D.8.125 cm
Answer: Option D

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More Questions on This Topic :

Question 1. A skating champion moves along the circumference of a circle of radius 28 m in 44 sec. How many seconds will it take her to move along the perimeter of a hexagon of side 48 m ?
  1.    48 sec
  2.    68 sec
  3.    72 sec
  4.    84 sec
  5.    90 sec
Answer: Option C
Question 2. The diameter of a circle is equal to the perimeter of a square whose area is 3136 cm2 . What is the circumference of the circle ?
  1.    352 cm
  2.    704 cm
  3.    39424 cm
  4.    1024 cm
Answer: Option B
Question 3. The area of a rectangular field is 2100 sq. meters. If the field is 60 metres long, what is its perimeter ?
  1.    180 m
  2.    210 m
  3.    240 m
  4.    Cannot be determined
  5.    None of these
Answer: Option E
Question 4. A horse is tied at the corner of a rectangular field whose length is 20 m and width is 16 m, with a rope whose length is 14 m. Find the area which the horse can graze :
  1.    144 sq. m
  2.    154 sq. m
  3.    156 sq. m
  4.    164 sq. m
Answer: Option B
Question 5. A circular grassy plot of land, 42 cm is diameter, has a path 3.5 m wide running around it outside. The cost of gravelling the path at Rs. 4 per square metre is :
  1.    Rs. 1002
  2.    Rs. 1802
  3.    Rs. 2002
  4.    Rs. 3002
Answer: Option C
Question 6. The ratio of the radii of two circle is 3 : 2. What is the ratio of their circumferences ?
  1.    2 : 3
  2.    3 : 2
  3.    4 : 9
  4.    None of these
Answer: Option B

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