Question 1 :
Say true or false:A sector is a region between the chord and its corresponding arc.
Question 2 :
The circumference of a circular field is $$528\ m$$. Then its area  is
Question 3 :
In a circle with radius $$5.7\ cm$$, the perimeter of a sector is $$27.2\ cm$$. Find the area of this sector.
Question 4 :
The radius of a circular wheel is $$1.75\ m$$. The number of revolutions that it will make in covering $$11\ kms$$ is:
Question 5 :
If the circumference of a circle is reduced by 50 % then the area will be reduced by
Question 6 :
If one side of a square is 2.4 m. Then what will be the area of the circle inscribed in the square?
Question 7 :
If the area of a circle is $$346.5 \displaystyle cm^{2}$$. Its circumference is
Question 8 :
What is the minimum radius $$(>1)$$ of a circle whose circumference is an integer?
Question 9 :
A rope by which a cow is tethered is in reased from 16m to 23m. How much additional ground does it have to graze now?
Question 10 :
The area of a sector is 1/18th of the area of the circle The sectorial angle is
Question 11 :
If the area and arc length of the sector of a circle are 60 $$cm^2$$ and 20 cm respectively, then the diameter of the circle is
Question 12 :
If a circle is divided into two equal parts, then equal part of the circle is called ________.
Question 13 :
If 'c' be the circumference and 'd' be the diameter then the value of$$ \displaystyle \pi $$ is equal to-<br>
Question 14 :
The diameter of a circle is $$1$$. Calculate the area of the circle.
Question 16 :
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 18 :
Choose the correct answer from the alternative given.<br/>A can go round a circular path $$8$$ times in $$40$$ minutes. If the diameter of the circle is increased to $$10$$ times the original diameter, the time required by A to go round the new path once travelling at the same speed as before is:
Question 19 :
$$r$$ is the radius and $$l$$  is the length of an arc. The area of a sector is ______.
Question 21 :
A roller of diameter 70 cm and length 2m is rolling on the ground What is the area covered by the roller in 50 revolutions?
Question 22 :
A wire of length $$36$$ cm is bent in the form of a semicircle. What is the radius of the semicircle?
Question 23 :
The minute hand of a clock is $$\displaystyle \sqrt{21}$$ cm long. The area described by the minute hand on the face of the clock between $$7$$ am and $$7.05$$ am is
Question 24 :
Lengthof an arc of a circle with radius $$r$$ and central angle $$\theta$$is(angle in radians):
Question 25 :
The circumference of a circular field is $$308 m$$. Find its radius in metres.
Question 26 :
The radius of a wheel is $$0.25 m$$. How many rounds will it take to complete the distance of $$11 km$$?
Question 28 :
Cirumference of a circle is S cm, and its area is A sq cm. which one of the following relations is true?
Question 29 :
What is the length of arc AB making angle of $$126^0$$ at center of radius $$8$$?
Question 30 :
State true or false:<br/>Sector is the region between the chord and its corresponding arc.
Question 31 :
What is the circumference of a circle whose radius is 8 cm?
Question 32 :
If the radius of a circle is $$\dfrac{7}{\sqrt{\pi}}$$, what is the area of the circle (in $$cm^2$$)?
Question 33 :
The diameter of a wheel of a cycle is 21 cm How far will it go in 28 complete revolutions?
Question 34 :
Given, $$\displaystyle A = \frac{S}{360}\times \pi r^2$$<br/>$$A$$ is the area of setor, $$ S$$ is the angle measure in degrees of the sector and $$r$$ is the radius of the circle. Find $$r$$ in terms of $$A$$ and $$S$$.
Question 35 :
The area of two circles are in the ratio $$25 : 36$$. Then the ratio of their circumference is _________.
Question 36 :
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 37 :
In a circle of radius 21 cm an arc subtends an angle of $$\displaystyle 56^{\circ} $$ at the centre of the circle. The length of the arc is
Question 38 :
If the diameter of a circle is increased by 200% then its area is increased by<br>
Question 39 :
Find the area of equilateral  triangle inscribed in a circle of unit radius.
Question 40 :
The length of a minute hand of a wall clock is $$8.4\ cm$$. Find the area swept by it in half an hour.
