Question

Q9. A room is 4.5 m long, 4m wide and 3 m high. Find the cost of white washing of the walls and t
rate of Rs. 111 per square metre​

Answer 1

Surface Area Of Room = 2(lb + by + ln)"

Area Of 4 wall = 2(l + b)×h"

Area

• 2 ( 4.5 * 3 + 4 * 3 )
• 2( 13.5+12)
• 2 ( 25.5)
• 51 m²

Cost of white washing = 51 * 7.50 = 382.5 Rupees

Answer 2

Answer:

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