Question

a classroom is 8cm long 6 m wide and 4 m height it has 2.5m × 1.5m and one window 1.5 m× 1.5 m find the area of wall excluding Windows and doors ? ​

Answer 1

Step-by-step explanation:

area of classroom = 2(lb+bh+hl)

area of classroom = 2(8×6+6×4+4×8)

area of classroom = 2(48+24+32)

area of classroom =2×104

area of classroom = 208m^2

area of window = 1.5×1.5

area of window = 2.25 m^2

area of door=2.5×1.5=3.75m^2

area of wall = area of classroom - (area of window +area of door)

area of wall= 208-(3.75+2.25)

area of wall = 208-6 = 202m^2