A classroom is 7 m long 6m broad and 3.5m high. The doors and window occupy of area of 17 m2
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L = 7
B = 6
H = 3.5
area of clasrrom= 2( 7×6+6×3.5+3.5×7)
= 2 (42+21+24.5)
=2×87.5
= 175
window and doors area laps = 175-17
= 158
B = 6
H = 3.5
area of clasrrom= 2( 7×6+6×3.5+3.5×7)
= 2 (42+21+24.5)
=2×87.5
= 175
window and doors area laps = 175-17
= 158
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