##### Vll - Maths

Profit And Loss

##### Vl - Science

Effects of Rainfall - Droughts and Floods

##### Vlll - History

Indian Constitution

##### lX - Biology

Nutrients and Balanced Diet

##### X - Business Studies

Transactions in a Bank

X

Available for CBSE, ICSE and State Board syllabus.

Call our LearnNext Expert on 1800 419 1234 (tollfree)

OR submit details below for a call back

Asked by Abraham

Feb 4, 2015

Three cubes each of side 5 cm are joined to the end. find the surface area of the resultant cuboid.

Raghunath Reddy

Member since Apr 11, 2014

Sol:

Given, each side of the cube is 5 cm.

When three cubes are joined end to end, then the resulting solid is a cuboid.

Length of the cuboid, *l *= 2 Ã— each side of the cube = 2 Ã— 5 cm = 10 cm

Breadth of the cuboid, *b* = each side of the cube = 5 cm

Height of the cuboid, *h* = each side of the cube = 5 cm

Surface area of the cuboid

= 2 (*lb* + *bh* + *hl*)

= 2 (10 cm Ã— 5 cm + 5 cm Ã— 5 cm + 5 cm Ã— 10cm)

= 2 (50 cm^{2} + 25cm^{2} + 50 cm^{2})

= 2 Ã— 125 cm^{2}.

= 250 cm^{2}.

Thus, the surface area of the resulting cuboid is 250 cm^{2}.

Rahul

Member since

It means joining three cubes length would be 15 nd b=5, h=5,
Then calculate the surface area by using 2 (lb+bh+hl) formula