1.

A solid cubical bock of fine wood costs RS 256 at RS 500 per metre square. Find its volume and the length of each side.

Answer»

Let the SIDES be of length be a 

so 1 m² = Rs 500

so Rs 1 = 1/500 m²

so Rs 256 = 256/500 m² = 0.512 m²


 so a² = 0.512 m² ⇒ a = 1.6√0.2 m

so VOLUME = (1.6√0.2)³ = 0.366 m³


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