Question

a door of diamention 13.2cm×200cm is fixed on the wall of diamention 250×200cm. the labour charges for painting per sq m of the walls Rs20.50 Find the total labour charges for painting the wall​

Answer 1

Step-by-step explanation:

For Wall,

Given -> Length(L)=250 cm

Breadth(B) = 200cm

For Door ,

Given -> Length(l) = 13.2cm

Breadth(b) = 200cm

Therefore,Total area of wall = L × B = 250×200

= 50000sq.cm

(For converting sq.cm into sq.m,we divide by 10000),thus,50000sq.cm = 5sq.m

Total area of door = 13.2×200 = 2640sq.cm = 0.264 sq.m

Area of wall to be painted= Total area of wall - Total area of door = (5 - 0.264)sq.m = 4.736 sq.m

Labour charges for painting 1sq.m of wall = ₹20.50

Thus,Labour charges for painting 4.736sq. m of wall = ₹ 20.50 × 4.736 = ₹ 97.088 = ₹97.1 (approx.) Ans.