Tamil Nadu Board of Secondary EducationSSLC (English Medium) (5 to 8) Class 8

The ratio between the circumference and diameter of any circle is _______ - Mathematics

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The ratio between the circumference and diameter of any circle is _______

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Solution

The ratio between the circumference and diameter of any circle is π

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Chapter 2: Measurements - Exercise 2.1 [Page 58]

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Tamil Nadu Board Samacheer Kalvi Class 8th Mathematics Answers Guide
Chapter 2 Measurements
Exercise 2.1 | Q 1. (i) | Page 58

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From the figure, identify the centre of the circle.

 


From the figure, identify a diameter.

 


From the figure, identify two points in the interior.


From the figure, identify a point in the exterior.


Draw any circle and mark

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  3. a diameter
  4. a sector
  5. a segment
  6. a point in its interior
  7. a point in its exterior
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Say true or false:

The centre of a circle is always in its interior.


A figure is in the form of rectangle PQRS having a semi-circle on side QR as shown in the figure. Determine the area of the plot.


A circle of radius 3 cm with centre O and a point L outside the circle is drawn, such that OL = 7 cm. From the point L, construct a pair of tangents to the circle. Justify LM and LN are the two tangents.


If radius of a circle is 5 cm, then find the length of longest chord of a circle.


AB is a chord of a circle with centre O. AOC is diameter of circle, AT is a tangent at A.

Write answers to the following questions:

  1. Draw the figure using the given information.
  2. Find the measures of ∠CAT and ∠ABC with reasons.
  3. Whether ∠CAT and ∠ABC are congruent? Justify your answer.

The circumcentre of a triangle is the point which is ______.


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