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“A chess board contains 64 equal squares and the area of each square is 6.25 cm2. A border round the board is 2 cm wide. Formulate the quadratic equation to find length of the side of chess board”. |
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Answer» Step-by-step EXPLANATION: Let the length of the SIDE of the chess board be x CM. Then, Therefore, (x−4) 2 =64×6.25x 2 −8x+16=400 x 2 −8x−384=0x 2 −24x+16x−384=0 (x−24)(x+16)=0 x=24 cm ♡──━━━━━━⊱✿⊰━━━━━━──♡ |
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