find the cost of painting the outer surface of a cuboidal house of length 15m, breadth 12m and height 9m at the rate of RS.45 per square meter
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surface area(S.A) =2lw+2lh+2hw
S.A=2(15*12)+2(15*9)+2(9*12)
S.A=2(180)+2(135)+2(108)
S.A=360+270+216
SA=846
cost of painting=846 *45
=38070.rs
S.A=2(15*12)+2(15*9)+2(9*12)
S.A=2(180)+2(135)+2(108)
S.A=360+270+216
SA=846
cost of painting=846 *45
=38070.rs
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