Question 12 Marks
Take a point on your notebook and draw circle of radii $4\ cm, 3\ cm$ and $6.5\ cm,$ each having the same centre $O.$
Answer
View full question & answer→The given shows circles of radii $4\ cm, 3\ cm$ and $6.5\ cm,$ respectively.
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Question 22 Marks
Take two points $A$ and $B$ on the page of your note book. Draw a circle with centre. $A$ which passes through $B.$
Answer
View full question & answer→The semi-circle with centre $O$ and radius $5 \ cm$ is shown below:
The end point of a diameter of a circle divides it into two equal parts, and each part is called a semi-circle. So, it is not the diameter, but end points of the diameter that determines the semi circle or a part of the semi-circle.
The end point of a diameter of a circle divides it into two equal parts, and each part is called a semi-circle. So, it is not the diameter, but end points of the diameter that determines the semi circle or a part of the semi-circle.
Question 32 Marks
Draw a semi-circle with centre $O$ and radius $5\ cm.$ Is the diameter that diameter that determines the semi-circle, a part of the semi-circle?
Answer
View full question & answer→The semi -circle with centre $O$ and radius $5 \ cm$ is shown below:
The end point of a diameter of a circle divides it into two equal parts, and each part is called a semi-circle.
So, it is not the diameter, but end points of the diameter that determines the semi-circle or a part of the semi-circle.
The end point of a diameter of a circle divides it into two equal parts, and each part is called a semi-circle.
So, it is not the diameter, but end points of the diameter that determines the semi-circle or a part of the semi-circle.
Question 42 Marks
The diameter of a circle is $14\ cm,$ find its radius.
Answer
View full question & answer→The radius of a circle is half of its diameter. Therefore, the radius $=\frac{\text{diameter}}{2}$ $\text{Radius}=\frac{14}{2}=7\text{cm}$
Question 52 Marks
Given a circle with centre $O$ and radius $2.5\ cm$, what is the length of the longest chord of the circle.
Answer
View full question & answer→The diameter of a circle is its longest chord. The diameter of a circle is twice of its radius. Length of the longest chord is, $2 \times 2.5 = 5\ cm$