zayna is putting ribbon around a picture of her dog. The picture is 300 millimeters wide and 150 millimeters tall. How many meters of ribbon will she need?

Putting a ribbon around a picture
⇒ Looking for perimeter

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Given information
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Width = 300mm
Length = 150mm

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Find Perimeter
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Perimeter = 2(Length + Width)
Perimeter = 2(300 + 150)
Perimeter = 2(450)
Perimeter = 900mm

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Convert mm to m
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900mm = 90cm
90cm = 0.9m

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Answer: She will need 0.9m of the ribbon
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