find the surface area of a room of length 25m, height 15m and width 5m.​

1 thought on “find the surface area of a room of length 25m, height 15m and width 5m.​”

1. Answer:

   l =25m

   b=5m

   h=15m

   Total surface area of rectangle = 2(lb+bh+lh)

   = 2(25×5+5×15+25×15)

   = 2(125+75+375)

   = 2×575

   = 1150m^2

   Lateral surface area of rectangle = 2(l+b)h

   = 2×30×15

   = 900m^2

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