Question

1.....a room is 9m long,6m wide and 4m high. find the cost of plastering its walls and ceiling at the rate of rs 2.50 per square meter.
a) rs 45
b)rs 600
c)rs 502
d)rs 354​

Answer 1

Answer:

l=9

b=6

h=4

a=2(lb+bh+lh) -lb

a=2(54+24+36) -54

a=2(114) -54

a=228-54

a=174m^2

cost = 174*2.5

cost = Rs 435

Answer 2

length =9m.

breadth=6m

height =4m

area= 2(lb+bh+lh)

a=2(54+24+36)

a=(114)-54

a=228-54

a=174m^2

cost =174×2.5

cost=Rs475.

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