Question

please help me I can't do this sum please explain ​

Answer 1

Answer:₹690

Step-by-step explanation:

Given that,

Dimensions of room as; l= 4.5m, b= 3.6m, h= 3m

Dimensions of door as; h=2m, b= 1m

Dimensions of window as; h=2m, b = 1.5m

Surface area of room ( 4 walls) = 2(bh +lb) = 2[(3.6*3)+(4.5*3.6)] =54$m^{2}$     eqn(1)

Area of door = bh = 1*2 = 2$m^{2}$        eqn(2)

Area of 2 windows = 2*bh = 2*1.5*2 =6 $m^{2}$            eqn(3)

Area of room to be painted = eqn(1)-eqn(2)-eqn(3) =46$m^{2}$       eqn(4)

Cost of painting = eqn(4) *₹15 =₹ 690

Hope that helps!