Question

find the lateral surface area and total surface area of cuboid with length 9cm and breadth 7cm and height 6cm​

Answer 1

Answer:

lateral surface area of cuboid = 2h(l+b)

=2×6(9+7)

=2×96

=192 cm²

total surface area of cuboid=2(lb+bh+hl)

=2×(9×7+7×6+6×9)

=2×(63+42+54)

=2×159

=318 cm²

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Answer 2

Answer:

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Step-by-step explanation:

GIVEN, L = 9cm

b = 7cm

& h = 6cm

LSA of Cuboid = 2h (l+b)

= 2×6( 9+6) cm²

= 12× 15 cm²

= 180 cm²

Now , TSA of Cuboid = 2[ lb +bh +hl ]

= 2[ (9×7) + (7×6) + (6×9) ]cm²

= 2 [ 63+42+54 ] cm²

= 2 × 159 cm²

= 318 cm²

therefore , the LSA of Cuboid is 180cm² & TSA of Cuboid is 318cm².

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