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Solution

let,

Length of the flag = L,

Width of the flag = W,

Radius of the red circle = r;

so, according to question,

L:W=10:6

=>L/W=10/6

=>W/L=6/10

=>W=(6/10)*L

again,

L:r=5:1

=>L/r=5/1

=>r/L=1/5

=>r=(1/5)*L

Now, Area of entire flag= L*W

Area of red circle =∏*r2

Area of green part=L*W-∏*r2


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