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The handkerchief is 20cm long and 18cm broad. How much the breadth must be decreased to cover an area of 324 cm.square |
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Answer» Answer breadth must be decreased by 1.8 cm Step-by-step explanation: 1) original area = LxB = 20x18 = 360 cm square 2) decreased area given = 324 3) as no information is given about length therefore we keep the length FIXED. therefore L = 20 4) LET breadth decreased be 'X' 5) new breadth = 18-x 6) new area => 20 * (18-x) = 324 360 - 20x = 324 x = 36/20 x = 1.8 cm new breadth = 18-1.8 = 16.2 cm |
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