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Question

The cross- section ABCD of a swimming pool is a trapezim.It's width AB =14 m depth at the shallow end is 1.5 m and at the deep end is 8 m Find the area of the cross section.
1525590_d10015b0a40a4718a887dda91b952313.PNG

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Solution

From the figure,Area of cross section=area of rectangle ABED+area of DEC

=14×1.5+12×6.5×14=14×32+12×6.5×14

=21+7×6.5

=21+45.5

Area =66.5 m2

1235417_1525590_ans_24dcdcc075cd46d4887f4f2d15b4edd3.JPG

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