area of square = 63*63=3969 m^2
area inside the square that is grazed =4*area of quadrants of 4 circles
= 4*(1/4)*(22/7)*(63/2)*(63/2) =3118.5
area left ungrazed = 3969-3118.5=850.5
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Choose the correct option.
What is the percentage of increase in area of a triangle if its sides are doubled?
In similar triangles, a ratio of areas is equal to a ratio of the square of corresponding sides.
Area 2/Area 1 = (side 2/side 1)²
When sides are doubled, the area of the new triangle will always be 4 times the original, the change in area will be 3 times. Hence the % change will always be 300% irrespective of the type of triangle.
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