The Student Room Group

How many would I need

Hi all I’m planning a surprise birthday party and decor for my wife her birthday coming up in a couple of weeks how many balloons if I’m deciding to go by a colour scheme of 3 would I need to cover up the ceiling of my room if I’m following something like this.

Reply 1
Find the surface area of the ceiling, then find the rough size of a single balloon, then divide.

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