self Maths Puzzle

Find the length of the wire required to go 15 times round a square field containing ?

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self Other Question

The edges of three iron cubes are 6 cm; 8cm; 10 cm respectively. A new cube was made by melting them. Find the edge of the new cube ? What is the length of the longest pole which can be kept in a room 12 m long, 4 m broad and 3 m high ?