Area of square = 64 sq cm (Side)2 = 64 ? Side = ?64 = 8 cmAccording to the question,? 2?r = 4 x 8 ? r = (4 x 8)/2?? r = 16/?? Area of the circle = ? x (16/?) x (16/?) sq cm = 256/? sq cm.
Area of the field =1215/135 = 9 hec= 90000 m2 [1 hec =10000 m2]? Side of the field = ?90000 = 300 mPerimeter of the field = 4 x 300 = 1200 mNow, cost of putting a fence around field = (1200 x 75)/100 = ? 900
Let the length of rectangle = L m? Breadth of rectangle = B mUsing conditions from the question,L - B = 23 ....(i)2(L + B) = 206 L + B = 103 ....(ii)On adding Eqs. (i) and (ii), we get 2L = 126 ? L = 63 m? B = 103 - 63 = 40 mThen , area of rectangle = L x B = 63 x 40= 2520 m2 .
Circular piece is 4 x 11 = 44 cm long, Then Circumference of circle is given by, 44 = pi x D, where D is the diameter D = 44 / pi Take pi = 22 / 7, then D = 44 / (22/7) = (44 x 7) / 22 D = 14 cm.
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