Question

if three cubes are joined each other of side a . find the volume and surface area of resulting figure​

Answer 1

Answer:

350

Step-by-step explanation:

The dimensions of the cuboid so formed are as under:

l= length=15cm,b= breadth=5cm, h= height =5cm

Surface area of the cuboid =2(15×5+5×5+15×5)cm

2

=2(75+25+75)cm

2

=350cm

2

Answer 2

Answer:

Step-by-step explanation:

Given:

length of the figure formed by joining 3 cubes of side a, l = 3a units

breadth of the figure, b = a units

height of the figure, h = a units

To Find:

1. Volume
2. Surface area

Formula used:

Volume of a cuboid = l*b*h

TSA of a cuboid = 2(lh + bh + lb)

Solution:

Volume = 3a*a*a = 3$a^{3}$ cubic units

TSA = 2(3a*a + a*a + 3a*a) = 14$a^{2}$ square units