Question

A room is 17m long and 12m broad. Find the cost of carpeting the room with a carpet 85cm broad at the rate of RS 120 per metre

Answer 1

Area of rectangular room=17×12=204m^2
breadth of rectangular carpet=85cm=85/100m [1cm=1/100metres]
Area of rectangular room=area of rectangular carpet=85/100×length=204
length of rectangular carpet=204×100/85=12×20=240m
perimeter of rectangular carpet=2(length+breadth)=2(0.85+240)=2×240.85=481.7m
cost of per metre=120rs
cost of 481.7metre=481.7×120=57804rs

Answer 2

The cost of carpeting the room with a carpet is Rs.28800.

Step-by-step explanation:

A room is 17 m long and 12 m broad.

The area of the room is $A=L\times B$

$A=17\times 12$

$A=204\ cm^2$

The width of the carpet is 85 cm.

Into m, $85\ cm=\frac{85}{100}=0.85\ m$

The length of the carpet is $L=\frac{A}{W}$

$L=\frac{204}{0.85}$

$L=240\ m$

The cost of carpeting the room with a carpet at the rate of Rs. 120 per meter

The cost of carpeting the room is $C=L\times rate$

$C=240\times 120$

$C=28800$

Therefore, the cost of carpeting the room with a carpet is Rs.28800.

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A room is 17m long and 12 m broad .find the cost of carpeting the room with a carpet 85cm broad at the rate of rupees 120 per metre.

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