The length of a wall is thrice its breadth. If 24 tiles each of area 0.5cm² are required to cover the wall, the length and breadth of the wall is :
(a) 4cm and 8cm
(b) 2cm and 6cm
(c) 3cm and 9cm
(d) 1cm and 3cm
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Answer:
(a) 4cmand 8cm
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