Question

The dimensions of a cuboid are 7 cm, 11 cm, 13 cm. Find the total surface area ​

Answer 1

T.S.A=2( lb+bh+lh )

=2(7cm×11cm+11cm×13cm+7cm×13cm)

=2(77cm²+143cm²+91cm²)

=2(311)cm²

=622cm2 Ans

Answer 2

Answer:

Total surface area of a cuboid = 2×(l×b+l×h+b×h) sq.units

Where, l = 7 cm, b = 11 cm and h = 13 cm

Or, Total surface area of a cuboid = 2×(7×11+7×13+11×13)

Or, Total surface area of a cuboid = 2×(77+91+143)

Or, Total surface area of a cuboid = 2×311

Or, Total surface area of a cuboid = 622 sq.cm.