Chord: Error Analysis & Misconceptions

Mathematics
Grade 6
11 questions
~22 mins
1 views0 downloads

About This Worksheet

This worksheet explores common errors and misconceptions related to chords in circles, helping students develop accurate understanding through varied questions.

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Chord: Error Analysis & Misconceptions

Subject: MathematicsGrade: Grade 6
Name:
Date:
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Untitled Worksheet

Grade Grade 6
A

Fluency & Practice

Answer all questions. Show your working in the grid spaces provided.
1.
In a circle with radius 10 cm, a chord is 16 cm long. Calculate the distance from the center of the circle to the chord.
[3 marks]
2.
A chord of length 12 cm is drawn in a circle. If the distance from the center to the chord is 5 cm, find the radius of the circle.
[3 marks]
3.
Construct a chord of length 8 cm in a circle with radius 10 cm. Label the points.
[4 marks]
4.
Plot the graph of y=2x for x values from -5 to 5 on the grid.
[2 marks]
B

Problem Solving & Reasoning

Answer all questions in detail, explaining your reasoning.
1.
A chord in a circle is 14 cm long, and the distance from the center to the chord is 9 cm. Find the radius of the circle. Explain each step.
[4 marks]
2.
Explain why a longer chord in the same circle is closer to the center than a shorter chord.
[3 marks]
C

Real-world Applications

Solve the following word problems related to chords in real contexts.
1.
A circular garden has a diameter of 20 meters. A gardener wants to plant a flower bed that is shaped like a chord in the garden, 8 meters long. How far from the center of the garden is the flower bed? Show your calculations.
[4 marks]
D

Challenge & Extension

Attempt these advanced problems. Show your detailed working.
1.
In a circle with radius 25 cm, a chord is 30 cm long. Find the distance from the center to the chord and verify if this chord is a diameter or not.
[3 marks]
2.
Prove that in any circle, the perpendicular bisector of a chord passes through the circle's center. Write your reasoning.
[4 marks]
E

Mixed Review & Error Analysis

Identify the mistake or misconception in each statement and correct it.
1.
A student states: 'All chords in a circle are the same length.' Is this correct? If not, explain the error and give a counterexample.
[3 marks]
2.
A common mistake is to think that the distance from the center to a chord is always less than the radius. Explain why this is false with an example.
[3 marks]

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Details

Created
1/1/2026
Updated
1/1/2026
Type
worksheet