Unit 5 – Composite Area Notes

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Presentation transcript:

Unit 5 – Composite Area Notes

Unit 5 – Composite Area Notes Find the area of the polygon. Think: Break the figure apart into a rectangle and a triangle. Find the area of each polygon.

Find the area of the polygon. Think: Break the figure apart into a rectangle and a triangle. Find the area of each polygon.

A = bh 1 2 __ A = bh A = • __ • __ 1 2 __ A = __ • __ A = ____ A = ___ Add to find the total area of the polygon. ___ + ___ = ___ The area of the polygon is ____ ft2.

A = bh 1 2 __ A = bh A = • 28 • 12 1 2 __ A = 28 • 24 A = 168 A = 672 Add to find the total area of the polygon. 672 + 168 = 840 The area of the polygon is 840 ft2.

Find the area of the polygon. Think: Break the polygon apart into rectangles. Find the area of each rectangle.

Find the area of the polygon. 1.7 cm 4.9 cm 1.3 cm 2.1 cm Think: Break the polygon apart into rectangles. Find the area of each rectangle.

1.7 cm 4.9 cm 1.3 cm 2.1 cm A = bh A = bh Write the formula for the area of a rectangle. A = ___ • ___ A = ___ • ___ A = ____ A = ____ ____ + ____ = _____ Add to find the total area. The area of the polygon is _____ ____.

1.7 cm 4.9 cm 1.3 cm 2.1 cm A = bh A = bh Write the formula for the area of a rectangle. A = 4.9 • 1.7 A = 2.1 • 1.3 A = 8.33 A = 2.73 8.33 + 2.73 = 11.06 Add to find the total area. The area of the polygon is 11.06 cm2.