Free Circles 02 Practice Test - 5th Grade
Question 1
If A and B are two points on the circle, then the line joining A and B is called as the ____.
point
circumference
centre
chord
SOLUTION
Solution : D
A and B are two points on the circle. The line joining A and B is called chord.
Question 2
The longest chord a circle is ____.
Diameter
Radius
Point
Circumference
SOLUTION
Solution : A
The diameter of the circle is the longest chord that passes through the center of the circle.
Here, O is the center of the circle and AB is its diameter.
Question 3
Part of a circumference is _____.
Radius
Diameter
Center
Arc
SOLUTION
Solution : D
Circumference is the length of the boundary of a circle. A part of it is called an arc.
Question 4
The ____ divides the circle into two equal parts.
Diameter
Radius
Circle
Circumference
SOLUTION
Solution : A
The diameter divides a circle into two equal parts.
Question 5
The distance between the centre and any point on the circle is called the ____.
radius
diameter
circumference
arc
SOLUTION
Solution : A
The distance between the center of a circle and any point on the circle is the radius.
Question 6
Which picture shows 90∘ of a circle?
SOLUTION
Solution : A
90∘ of a circle is quarter of a circle (that is 14 of 360∘=90∘)
The above image is 90∘ of a circle.
Question 7
Concentric circle have the same ____.
Circumference
Center
Diameter
Radius
SOLUTION
Solution : B
Circles that have the same center but different radii are called Concentric circles.
Question 8
If the radius of a pizza is 18cm, then its diameter is _____cm.
Half of 18
2×18
18×18
18
SOLUTION
Solution : B
We know that diameter is twice the radius.
If radius of the pizza is 18cm, then diameter is 2 x 18cm.
Question 9
The perimeter of a semi-circle is ____.
Half of Radius
Half of Diameter
Half of Circumference
Twice of Circumference
SOLUTION
Solution : C
The perimeter of a circle is called the circumference.
Semi-circle is half of the circle and its circumference is half of the circle’s circumference.
Question 10
In an archery board, the radius of the yellow circle is 5cm, and each of the next circle is 2cm more in radius than its previous one. Find the diameter of the black circle.
18cm
22cm
49cm
9cm
SOLUTION
Solution : B
Radius of the yellow circle is 5cm
Black circle is the 4th circle from the center. So, its radius is 5 + 2 + 2 + 2 = 11cm
Radius = 11cm. Therefore, diameter is 2×11cm = 22cm