mensuration of class 9th
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1. Area of trapezium = 1/2(sum of parellel side ) * height
= 1/2 * (3+6+3+6)*4
= 1/2 * 18* 4
= 36cm^2
Area of equilateral triangle = (underroot 3 )/4 * 6*6
= 9 (root 3)
= 15.59 cm^2
total area = 36+15.59
= 51.59 cm^2
1. Area of trapezium = 1/2(sum of parellel side ) * height
= 1/2 * (3+6+3+6)*4
= 1/2 * 18* 4
= 36cm^2
Area of equilateral triangle = (underroot 3 )/4 * 6*6
= 9 (root 3)
= 15.59 cm^2
total area = 36+15.59
= 51.59 cm^2
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