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Gyaan Maths
CBSE · Class 6-12
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Class 8 · Ganita Prakash · Unit 14: Area
Circle Area
Lesson 3 of 3
A
=
π
r
2
A = \pi r^2
A
=
π
r
2
. Use
π
≈
22
/
7
\pi \approx 22/7
π
≈
22/7
or
3.14
3.14
3.14
. For semicircle:
A
/
2
A/2
A
/2
.
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Rhombus via Diagonals
Unit complete
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All lessons in this unit
1. Trapezium Area
2. Rhombus via Diagonals
3. Circle Area