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Fill in the blanks.
(i) Area of triangle =12×(.........)×(.........).
(ii) Area of a ||gm = 12×(.........)×(.........).
(iii) Area of a trapezium = 12×(.........)×(.........).
(iv) The parallel sides of a trapezium are 14 cm and 18 cm and the distance between them is 8 cm. The area of the trapezium is ......... cm2.

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Solution

i) Area of a triangle=12×Base×Height
ii) Area of a ∥gm=Base × Height
iii) Area of a trapezium=12×Sum of the parallel sides×Distance between them.
iv) Area of a trapezium=12×(14+18)×8 cm2
=12×32×8 cm2
=16×8
=128cm2


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