Question

Find the TSA of a cuboid whose sides are 7m, 300cm, 450cm *

a) 132m²

b) 143m²

c) 152m²

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Answer 1

Answer:

Given that l=20cm, b=12cm, h=9cm

∴T.S.A=2(lb+bh+lh)

=2[(20×12)+(12×9)+(20×9)]

=2(240+108+180)

=2×528

∴T.S.A=1056cm

2

solution

Answer 2

Answer :-

T.S.A. of Cuboid = 1320000 sq. cm.

Explanation :-

Given :

• Length of Cuboid = 7m = 700 cm.
• Breadth of Cuboid = 300 cm.
• Height of Cuboid = 450 cm.

To Find :

• T.S.A. of Cuboid.

Solution :

We know that,

T.S.A of Cuboid = 2(lb + bh + hl).

➠ 2(lb + bh + hl).

➠ 2{(700 × 300)+(300 × 450)+(700 × 450)}

➠ 2{210000 + 135000 + 315000}.

➠ 2{660000}.

➠ 1320000 sq. cm.

∴ T.S.A. of Cuboid = 1320000 sq. cm.