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How many tiles, each of the area 400 cm2 will be needed to pave a footpath which is 2 m wide and surrounds a grass plot 25 m long and 13 m wide?

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2400

3200

4200

4800

answer is C.

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Detailed Solution

Concept- A grass plot is

long and

wide.
Thus, the area of the grass plot

sq.

A footpath which is

wide surrounds a grass plot.
Thus, the area of the entire plot with the footpath

sq. m
Thus, the area of the footpath

sq.

Area of each tile

sq.

Thus, number of tiles

Hence, the correct answer is 3) 4200.

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