the perimeter is how long around it is, like my room is 15 ft around, so therefore my rooms perimeter is 15ft
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54 Meters
625
Perimeter = area + b1 + b2 + c P = a + b1 + b2 + c
12 because there are 12 months and no one in the room has a birthday in the same month
Generally there are eight corners - one at each junction of two walls and either the floor or the ceiling. Though of course it does depend on the shape of the room, there may also be alcoves etc.