on doubling its radius.
7. Four squares each with side 4 cm are joined together to form a large square.
What is the perimeter of the square so formed?
(1) 16 cm (2) 28 cm (3) 32 cm
1 2 3 4
(4) 64 cm
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Answer:total length of each side is 8 cm now . so perimeter is 4*8=32 cm.
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