Question

a hall is 12m long, 10m wide and 5m high. Its wall and the roof are to be whitewashed from inside. find the total area to be whitewashed. also, find its cost at the rate of rupees 5.40 per sq.m.

Answer 1

Height=5m
Length=12m
Width=10m
Area of 4 Walls = 2*Height(Length+Width)
→ 2*5(12+10) m²
→ 10*22 m²
→ 220m²

Area of roof = Length*Width
→ 12*10 m²
→ 120m²

Total area → (220+120)m²
→ 340m²

Rate = m²/₹5.40

Price = 340/5.40
₹62.96

Hope this satisfies your question.

Answer 2

Answer:

I hope it will helpful to you