Question

Three cubes,each of edge 5 cm long are placed together.Find the total surface area of the cuboid so formed.

Answer 1

$\huge{\overline{\underline{\bf{ANSWER}}}}$

=350 CM^2

Given,

Side of cube=5 cm

No. of cube= 3

To find,

Tsa of cuboid formed

Soln, Step by step

For cube in middle we have to find csa

so,

CSA of cube = 4 a^2

where a=5 cm

=4×(5)^2

= 4×25

=100 cm^2_________________(1)

For cubes on edges,

i.e ,

CSA+(SIDE)^2

For cube on right edge,

Formula=4a^2+a^2

where a=5cm

so,

4×(5)^2+(5)^2

i.e

5×(5)^2

5×25

=125 cm^2

same for left edge

i.e

125cm^2

togetherely

for edges,

125+125

ie

=250cm^2_______________(2)

Add 1 and 2 for TSA of cuboid

so,

100+250

=350 cm^2

TSA OF CUBOID IS 350 cm^2

MARK AS BRAINLIST

Answer 2

Hello buddy

Answer:

350 cm square

See the attached photo

Mark My answer as brainliest

I hope it helped you dude