Question

how to solve the following problem​

Answer 1

Step-by-step explanation:

Given:-

4 cubes are joined end to end of edge 9cm

To find:-

Total surface area and volume of the resultant figure

Solution:-

From the given figure :

4 cubes are joined end to end then it becomes a cuboid

Length of the cuboid=9+9+9+9=36 cm

breadth of the cuboid=9cm

Height of the cuboid =9cm

Total surface area of a cuboid

=2(lb+bh+hl) sq.units

=>2[(36×9)+(9×9)+(9×36)] sq.cm

=>2(324+81+324) sq.cm

=>2(729) sq.cm

=>1458 sq.cm

Volume =lbh cubic units

=>36×9×9 cubic cm

=>2916 cubic cm

Answer:-

1)Dimensions of the resultant figure are

length=36 cm

breadth=9cm

Height=9cm

2) Total surface area=1458sq.cm

3) Volume=2916 cubic cm

Used concept:-

If two or more cubes are joined end to end there is no change in breadth and height and change in only its length.