Question

The cubes of side 10 cm each are joined end to end. The total sustace area of the resulting cuboid is
A 3000cm b 1800 cm (C) 1500 cm (D) 1400 cm
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Answer 1

Hyy Dude

the area of the resultant figure = 1400 cm²

Step-by-step explanation:

Given that,

there are three cubes,

side length of each cube = 10 cm

and all the three cubes are joined to end to end.

now it take the form of a cuboid

where,

length of the cuboid = 10 × 3

= 30 cm

and breadth = 10 cm

height = 10 cm

now,

surface area of new cuboid

= 2(lb + bh + lh)

where,

l = length

b = breadth

h = height

putting the values,

surface area = 2{30(10) + 10(10) + 10(30)}

= 2(300 + 100 + 300)

= 2(700)

= 1400 cm²

so,

the area of the resultant figure = 1400 cm²

HOPE it's helps you

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Answer 2

no. (D) - 1400..…...........