Mark for review Of a frame is framed at Rs 3 per cm, find the cost of framing a square picture of length 12 cm.
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Answer:
lengthof the square - 12 cm
frame= perimeter
perimeter of the square = 4 * side = 4*12= 48 cms
per cm - Rs. 3
Then, for 48 cm it is 3×48 = Rs. 144
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