Question

Godown is 65 M long 43 metre broad and 11 M high find the cost of whitewashing Kids 4 walls and ceiling at 21.50 per square metre

Answer 1

length = 65 m
breadth = 43 m
height = 11 m
we have to find the curved surface area first :
$2 \: h \: (l \: + b)$
2 × 11 × 65 × 43 = 61490
we should add the ceiling so :
61490 + lb = 64285
64285 x 21.50 = 121582 .5

Answer 2

Answer:

area of four walls :-

2×(l+b)×h

2 × (65+43)×11

= 2376

area of ceiling :-

65×43

= 2795

cost of whitewashing :-

21.50 × (2795 + 2376)

= 111176.5