How many circular plates of diameter d be taken out of a square plate of side 2d with minimum loss of material?

• A. 5
• B. 6
• C. 2
• D. 8

Answer: (A)

Area of square plate = (Side)2 = (2d)2= 4d2Area of circular plate = ? (d/2)2= ?d2/4? Number of square plates = [(4d2)/4] / [(?d2)/4]= (4 x 4)/? ? 5Since, nearest integer value is 5.