Question

A swimming pool is 50 m in length , 30 m in breadth and 2 m in depth . Find the cost of cementing its floor and walls at the rate of Rs 30 per square metre .​

Answer 1

Explanation:

We know that curved surface area of a cuboid is 2h (l+b) and area of 1 side of a rectangle is b×l

So, total cementing of swimming pool is

=>2h (l+b)+(l×b)

=>2×2 (50+30)+(50×30)

=>320+1500=1820sq/m

so costing is 30×1820=RS 54600

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Answer 2

Explanation:

The term paleolithic is derived from two Greek words namely Palaios which means old and lithos which refers to stone. Neolithic also consists of two Greek words, neos which means new and lithos. Paleothic period and neolithic period were both characterised by different lifestyles and occurrences.FL.