Question

Each side of a square is 10 m. Find the cost of flooring it with square marble of side 1 m, if 1 marble cost 250 Rs.

• A. 23000 Rs
• B. 30000 Rs
• C. 24000 Rs
• D. 25000 Rs

Answer 1

The correct option is D 25000 Rs

Given:
Length of the side, a = 10 m
Area = a${}^2$ = 10${}^2$= 100 m${}^2$

Side length of the marble, a = 1 m
Area = a${}^2$ = 1${}^2$= 1 m${}^2$

Number of marbles required = $\frac{100}{1}=100marbles$
cost of 1 marble = 250 Rs
cost of 100 marble = $250\times 100=25000Rs$

Hence the cost of flooring sqaure is 25000 Rs.