A square has all four sides the same length, so perimeter = 4 x side length.
4 x 5cm = 20cm.
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The perimeter is 7 cm
If the area of the square is 64 square cm then its sides are 8 cm. Its perimeter: 8+8+8+8 = 32 cm
You have to look at the information given in the question. It says it's a square so that means that each side is 5 cm long. the area of a square with 5 cm long sides is 25 cm squared. THAT IS THE FOURTH MATHS QUESTION I'VE ANSWERED TODAY. GO ME!
Then the square will have 4 equal sides of 5cm with a perimeter of 20cm and an area of 25 square cm
10*2+5*2 = 30 CM