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Area

Find the area of circles, special quadrilaterals and composite shapes.

Measurement · MA4-ARE-C-01

Sub-topics

Area of circles

Calculate the area of circles using A=πr2A = \pi r^2, given the radius or diameter, and find the area of semicircles and quarter-circles.

Area of special quadrilaterals

Find the area of parallelograms using A=bhA = bh, trapeziums using A=12(a+b)hA = \frac{1}{2}(a+b)h, and rhombuses and kites using A=12d1d2A = \frac{1}{2}d_1 d_2.

Composite shapes with circles

Find the area of composite shapes formed by combining or removing rectangles, triangles and circular regions.