Question

The length , breadth, height of a room is 12m,5m and 3m respectively. Find the cost of whitewash the room at ₹3.00 per square meter .
Can anyone solve this problem

Answer 1

Answer:

rupees 480

Hope this answer will help you

Answer 2

Given :

• Length = 12m
• Breadth = 5m
• Height = 3m

To Find :

• Cost of whitewash the room at Rs.3 per m².

Solution :

$\longmapsto\tt{Length(l)=12m}$

$\longmapsto\tt{Breadth(b)=5m}$

$\longmapsto\tt{Height(h)=3m}$

Using Formula :

$\tt\boxed{Surface\:Area\:of\:Cuboid=2(lb+bh+hl)-lb}$

Putting Values :

$\longmapsto\tt{2(12\times{5}+{5}\times{3}+{3}\times{12}-(12\times{5}}$

$\longmapsto\tt{2(60+15+36)-60)}$

$\longmapsto\tt{2(111)-60}$

$\longmapsto\tt{222-60}$

$\longmapsto\tt\bold{324{m}^{2}}$

Now :

• Cost of white washing at Rs.3 per m² :

$\longmapsto\tt{Cost\:of\:324{m}^{2}=324\times{3}}$

$\longmapsto\tt\bold{Rs.972}$