a tank is 30 m long 9 m wide and 4 m deep . what is the cost of plastering its wall and bottom 25 paise per s.q m ?
Answers
Answered by
5
l = 30m
b = 9m
h = 4m
Surface area of wall (LSA)= 2(lh+bh)
= 2(30×4 + 9×4)
= 2(120 + 36)
= 2×156
= 312 m²
Area of bottom = l×b = 30×9 = 270m²
total area = 312+270 = 582m²
Rate of plastering = 25p/m² = Rs. 0.25
cost = 0.25×582 = Rs. 145.50
b = 9m
h = 4m
Surface area of wall (LSA)= 2(lh+bh)
= 2(30×4 + 9×4)
= 2(120 + 36)
= 2×156
= 312 m²
Area of bottom = l×b = 30×9 = 270m²
total area = 312+270 = 582m²
Rate of plastering = 25p/m² = Rs. 0.25
cost = 0.25×582 = Rs. 145.50
Answered by
0
l=30m; b=9m h=4m
Surface area of wall=2(lh+bh)
2(30×4+9×4)=312
Area of floor=l×b=30×9=270
Total area= 312+270=582
Cost=582×.25=145.5rs
Similar questions