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Perimeter and Area. Perimeter. The perimeter of a closed plane figure is the length of its boundary. 8cm. 10cm. 7cm. 8cm. 15cm. Perimeter = 15 + 8 + 10 + 8 + 7 = 48cm. Perimeter. Square. Triangles. Rectangle. b=4cm. b. c. L= 8cm. a. L=6cm. P = 8 + 5 + 8 + 5.

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## Perimeter and Area

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**Perimeter and Area**www.assignmentpoint.com**Perimeter**• The perimeter of a closed plane figure is the length of its boundary. 8cm 10cm 7cm 8cm 15cm Perimeter = 15 + 8 + 10 + 8 + 7 = 48cm www.assignmentpoint.com**Perimeter**• Square • Triangles • Rectangle b=4cm b c L= 8cm a L=6cm P = 8 + 5 + 8 + 5 P = 6 + 6 + 6 + 6 P = a + b + c P = l + b + l + b = 2(l + b) P = l + l + l + l = 4l or 4s www.assignmentpoint.com**Area**• Area is the space within the boundary of a figure. www.assignmentpoint.com**Area of parallelogram**• Area of parallelogram = base x height height base www.assignmentpoint.com**Area of a triangle**• Area = ½ x base x height h h h b b b www.assignmentpoint.com**Area of trapezium**• Area of trapezium ABCD = area of ΔABC + area of ΔACD = (½ x BC x AH) + (½ x AD x CK) = ½ x AH x (BC + AD) = ½ x height x sum of parallel sides D K A B C H www.assignmentpoint.com**THANK YOU**www.assignmentpoint.com

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