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area of rectangle =lxb
=26x12
=312m^2
area of middle portion consist of 2 hemispheres and one cylinder
=2pei r ^2(hemisphere)
=2x22/7x7x7
=154m^2
now for area of cylinder
=2pei rxh
=2x22/7x 21x7
=924m^2
ykhushi:
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