find TSA of a cuboid with length 9cm breadth 7cm and height 4cm
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as length breadth and height are 9 . 7. 4... so total surface area is 2( 9*7 + 7×4. + 9 × 4. ) = 127. cm^3
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TSA OF CUBOID = 2(lb+bh+lh)
= 2(9x7 + 7x4 + 9x4)
= 2(63+28+36)
=254cm sq.
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