Area and Perimeter of Plain Figures

Subject: Compulsory Maths

Overview

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Things to remember
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  • Area of a square= length x length = (length)2 = l2
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  • Perimeter of a square = 4a
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  • Area of rectangle = l x b
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  • Perimeter of a rectangle = 2(l+b).
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  • Area of a parallelogram = base x height
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  • Area of a rhombus = \(\frac{1}{2}\) x d1 x d2.
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  • Area of a trapezium = \(\frac{1}{2}\) x (sum of parallel sides) x h
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  • Area of the circle = \(\frac{1}{2}\) circumference
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