A student bought 13 by 3 m of yellow ribbon, 37 by 6 m of red ribbon and 29 by 9 m of blue ribbon for decorating a room. How many metres of ribbon did he buy
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Area of ribbon = area of rectangle = l × b
Total ribbon = Total area = Area of yellow ribbon + Area of red ribbon + Area of blue ribbon
= (13 × 3)+(37 × 6)+(29 × 9)
=39 + 222 + 261
=522 sq. m. (ans.)
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