Question

The surface area of a cuboid is 1300 cm .if it's length is 15 cm and height is 20 cm find its breadth​

Answer 1

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The length of the cuboid is 15 cm.

Let the length of the cuboid be l cm.

Breadth of the cuboid is 10 cm

Height of the cuboid is 20 cm.

Total surface area of the cuboid is 1300 cm²

Formula to find the surface area of the cuboid is 2(lb + bh + hl).

1300 = 2 (10l + 200 + 20l)

650 = 30l + 200

450 = 30l

l = 15 cm

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Answer 2

Answer:

breadth=10cm

Step-by-step explanation:

Surface area of cuboid = 2(lb+bh+lh) 1300cm= 2(15×b+b×20+15×20)

=2(15b+20b+300)

1300cm/2=15b+20b+300

650cm=15b+20b+300

650-300=35b

350=35b

350/35=b

10=b