Question

What is the cost of false ceiling a room 12mx8m long with a total ceiling width of 80cm at Rs 120 per meter?

Answer 1

Ceiling cost  = 14400 Rs

Step-by-step explanation:

a room 12mx8m long

Area = 12 * 8  = 96 m²

ceiling width of 80cm at Rs 120 per meter

=> Ceiling cost  = 120  for  (80/100)* 1  = 0.8 m²

Ceiling cost   of 0.8 m²  = Rs 120

=> Ceiling cost   of 1 m²  = Rs 120 /(0.8) = 150 Rs

=>  Ceiling cost   of 96 m²  = 96 * 150 = 14400 Rs

Ceiling cost  = 14400 Rs

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Answer 2

$\bold{Given}\begin{cases}\underline{\footnotesize\sf{\star\:\:Dimensions\:of\:the\:ceiling\:room}}\\\sf{Length(l)=12m}\\\sf{width(b)=8m}\\ \sf{\footnotesize\sf{cost\:of\:ceiling\:width\:of\:80cm\:@120/m}}\end{cases}$

Formula used:---

• Area of ceiling room = length × breadth
• Cost of ceiling = Total area × rate per metre .
• 1m = 100cm

Solution:----

Area of ceiling room = 12 × 8 = 96m²

ceiling width of 80cm at Rs 120 per meter,

so, ceiling cost = 120rs for = 80/100 = 0.8m² ..

Now,

for 0.8m² cost of ceiling = 120 Rs.

for 96m² cost is = 120×96/0.8 = 14400 Rs..

Hence , total cost of ceiling is Rs.14400