Question

hole in the form of rectangular region is 28 cm long and parameter wide its floor is to be covered with square slabs of 16 centimetre what will be the cost of slab required to cover the reason if the cost of 100 slaps is rupees 250​

Answer 1

Length =28 m   Breadth =12m

∴ Area of rectangle = L×B ⇒[28 m  × 12m] ⇒  336  sq m

square slabs of side = [0.16 cm =0.16 m] ⇒

∴ Area of square slab =[side]^2  =[0.16 m ×0.16 m ]  ⇒0.0256  sq m

∴ Nos of slabs needed =[Area of rectangle  ÷ Area of square ]  

∴ Nos of slabs needed =[336  sq m  ÷ 0.0256  sq m ]

∴ Nos of slabs needed = 13125  

the cost of 100 slabs is rupees 250

∴ cost of 13125 = [250÷100] × 13125

                      =2.5× 13125 ⇒RS 32812.5

the cost of the slabs =  RS 32812.5    

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