Unit 12 · Class 7 IB MYP · Formula Sheet

Circle Properties & Measurement Formulas — Class 7 IB MYP

Calculate circumference and area of circles; explore radius, diameter, and chord relationships.

Key Formulas

Circumference

C = \pi d = 2\pi r

Area

A = \pi r^2

Arc Length

L = \dfrac{\theta}{360} \times 2\pi r

Area of Sector

A = \dfrac{\theta}{360} \times \pi r^2

Worked Examples

1Using: Area of Circle

Find the area of a circle with radius 7 cm.

Step 1: Area = pi x r^2

Step 2: = 22/7 x 49 = 154 sq. cm.

Answer: 154 sq. cm

2Using: Circumference

Find the circumference of a circle with radius 14 cm.

Step 1: C = 2 x pi x r

Step 2: = 2 x 22/7 x 14 = 88 cm.

Answer: 88 cm

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More Class 7 IB MYP Formulas

Rational NumbersPercentages & Proportional ReasoningAlgebraic ExpressionsLinear EquationsAngle RelationshipsTransformations

Frequently Asked Questions

How many formulas are in Class 7 IB MYP Circle Properties & Measurement?+
There are 4 formulas in the Circle Properties & Measurement chapter for Class 7 IB MYP. Each formula is essential for solving problems in this topic.
How to remember Circle Properties & Measurement formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Circle Properties & Measurement formulas enough for exams?+
Yes, these formulas cover the complete IB MYP Class 7 syllabus for Circle Properties & Measurement. Practice applying them to different types of questions for full exam readiness.

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