The number of marble slabs of size 20 text{ c | vedclass

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(B) The side of the square room is $3 	ext{ m}$.Area of the room $= 3 	ext{ m} 	imes 3 	ext{ m} = 9 	ext{ m}^2$.Since $1 	ext{ m} = 100 	ext{ c

Vedclass · Accepted Answer

$150$

Vedclass · Answer

(B) The side of the square room is $3 	ext{ m}$.Area of the room $= 3 	ext{ m} 	imes 3 	ext{ m} = 9 	ext{ m}^2$.Since $1 	ext{ m} = 100 	ext{ cm}$,$1 	ext{ m}^2 = 10,000 	ext{ cm}^2$.Therefore,the area of the room in $	ext{cm}^2 = 9 	imes 10,000 = 90,000 	ext{ cm}^2$.The area of one marble slab $= 20 	ext{ cm} 	imes 30 	ext{ cm} = 600 	ext{ cm}^2$.The number of slabs required $= \frac{	ext{Total area of the room}}{	ext{Area of one slab}} = \frac{90,000 	ext{ cm}^2}{600 	ext{ cm}^2} = 150$.

The number of marble slabs of size $20 \text{ cm} \times 30 \text{ cm}$ required to pave the floor of a square room of side $3 \text{ m}$ is:

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