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If length, breadth and perimeter of a rectangle are (4x +30)cm, (2x +10)cm and 800 cm respectively. Then its dimensions are

Answer» LENGTH: 4X+30 = 4(60)+30 = 270 cmBreadth: 2x+10 = 2(60)+10 = 130 cmStep-by-step explanation:Length + Breadth + Length + Breadth = Perimeter2 (length) + 2 (breadth) = 8002 (4x+30) + 2 (2x+10) = 8008x + 60 + 4x +20 = 80012x + 80 = 80012x = 720x= 720/12 = 60


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