Lakshya Education MCQs

Question: The ratio of the radii of two circle is 3 : 2. What is the ratio of their circumferences ?
Options:
A.2 : 3
B.3 : 2
C.4 : 9
D.None of these
Answer: Option B

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More Questions on This Topic :

Question 1. 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 2. 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 3. A triangle with sides 13 cm, 14 cm and 15 cm is inscribed in a circle. The radius of the circle is :
  1.    2 cm
  2.    3 cm
  3.    4 cm
  4.    8.125 cm
Answer: Option D
Question 4. The circumference of a circle, whose area is 24.64 m2 , is :
  1.    14.64 m
  2.    16.36 m
  3.    17.60 m
  4.    18.40 m
Answer: Option C
Question 5. A triangle and a parallelogram are constructed on the same base such that their areas are equal. If the altitude of the parallelogram is 100 m, then the altitude of the triangle is :
  1.    10$$\sqrt 2 $$ m
  2.    100 m
  3.    100$$\sqrt 2 $$ m
  4.    200 m
Answer: Option D
Question 6. In an isosceles triangle, the measure of each of the equal sides is 10 cm and the angle between them is 45° . The area of the triangle is :
  1.    $$25 \,c{m^2}$$
  2.    $$\frac{{25}}{2}\sqrt 2 \,c{m^2}$$
  3.    $$25\sqrt 2 \,c{m^2}$$
  4.    $$25\sqrt 3 \,c{m^2}$$
Answer: Option C

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