Area of a trapezoid in square units = 0.5*(sum of parallel sides)*height
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Area that the goat can cover = π x 7² m² Area that the goat can cover in the square plot = (1/4) x π x 7² m² A = (1/4) x π x 7² m² A = (1/4) x 22/7 x 49 m² A = 38.5 m²
The LCM of 3/7 and 4/m is 7*m if m is not a multiple of 7, and m if m is a multiple of 7.
4/7 - 4/m need a common denominator--multiply the first term by m/m and the second by 7/7 4m/7m - 28/7m (4m-28)/7m OR 4/7 - 4/m
It is: 5*7 = 35 square m