Question

a swimming pool is 15 m in length 12 metre in breadth 2 metre in depth find the cost of cementing the floor and walls @ rupees 15 per square metre​

Answer 1

Answer:

$\sf \large \underline{Given:-}$

• Length= 15m
• Breadth= 12m
• Height= 2m
• Cost of cementing the walls and floor= ₹15/m^2

$\sf \large \underline{To \: Find:-}$

• Cost of cementing the walls and floor

$\sf \large \underline{Solution:-}$

Since it is given in question that the floor and wall have to be cementing, so we have to find the area of 4 walls and area of floor ,except area of roof.

Area have to be cementing= LSA of walls+Area of floor

=2(l+b)h + l×b

Where,

• L = Length
• B = Breadth
• H = Height

Now put the values in above formula

$\tt \large= 2(l + b)h \: + \: l \times b$

$\tt \large = 2(15 + 12) \times 2 \: \: + \: \: 15 \times 12$

$\tt \large = 27 \times 4 \: \: + \: \: 180$

$\tt \large = 108 \: \: + \: \: 180$

$\tt \large = {\bold{ \red{ 288 \: {m}^{2} }}}$

Now find the cost of cementing the walls and floor

Cost of cementing 1m^2 the walls and floor= ₹15

So, Cost of cementing 288m^2 the walls and floor= 288×15 = ₹4320

$\sf \large{\boxed {\red{ \sf{Cost \: of \: cementing \: the \: walls \: and \: floor= ₹4320}}}}$

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