a rectangular picture with perimeter 27 cm was glued in the center of a rectangular piece of cardboard. there is a 1 cm margin (of empty cardboard) all around the picture. what is the perimeter of the piece of cardboard

31

Step-by-step explanation:

27 cm plus 1cm for each side of the rectangle so 4 = 31

35

Step-by-step explanation:

each side is longer by 1 cm and every side has 2 corners so it would be 27+8=35

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

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