Question 1 :
The number of circular pipes with an inside diameter of $1$ cm which will carry the same amount of water as a pipe with an inside diameter of $6$ cm is:
Question 2 :
A rectangular sheet of acrylic is 50 cm by 25 cm . From it 60 circular buttons, each of diameter 2.8 cm have been cut out. The area of the remaining sheet is
Question 3 :
The ratio of areas of square and circle is givenn : 1 where n is a natural number. If the ratio of side of square and radius of circle is k :1, where k is a natural number, then n will be multiple of
Question 4 :
The diameter of a circle is $1$. Calculate the area of the circle.
Question 5 :
The perimeter of a sector of a circle is 37cm. If its radius is 7cm, then its arc length is
Question 6 :
Find the area of equilateral  triangle inscribed in a circle of unit radius.
Question 7 :
The radius of a circle whose area is equal to the sum of the areas of two circles where radii are 5 cm and 12 cm is
Question 8 :
Area of a sector having radius 12 cm and arc length 21 cm is
Question 10 :
The circumference of a circular field is $528\ m$. Then its area  is
Question 11 :
A circular disc of radius $10 cm$ is divided into sectors with angles $120^o$ and $150^o$, then the ratio of the area of two sectors is
Question 12 :
Say true or false:A sector is a region between the chord and its corresponding arc.
Question 13 :
A wire of length $36$ cm is bent in the form of a semicircle. What is the radius of the semicircle?
Question 14 :
What is the minimum radius $(>1)$ of a circle whose circumference is an integer?
Question 15 :
A cow is tied to a pole, fixed to the midpoint of a side of a square field of dimensions $40\ m\times 40\ m$, by means of $14\ m$ long rope. Find the area that the cow can graze.