1.

iltu the form of a circle, find the area of the circleA rectangular garden 80 m by 40 m is divided Intofour equal parts by two cross-paths 2.5 m wide.Find() the area of the cross-paths.(i) the area of the unshaded portion.

Answer»

Area 1= 40 *2.5= 100area 2'= 80*2.5=200but there is also overlap of two path so we have to subtract one timeso 2.5*2.5=6.25so total area = 100+200-6.25=293.75 m^2

80*2.5=200 m^240*2.5=100 m^2total road area= (200+100)-(2.5*2.5)=293.75 m^2

area of rectangular garden=80*40=3200 m^2

so, unshaded portion's area= 3200-293.75=2906.25 m^2


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