Question

Plastic Box 1.5 m long 1.25 m wide and 65 m deep is to be made it is open at the top ignoring the thickness of plastic sheet deter mine the area of sheet required for making the Box II the cost of sheet for it if a sheet measures 1 m² cost Rs.20

Answer 1

Step-by-step explanation:

Here, l=1.5m,b=1.25m,h=65cm=0.65m

Area =2(l+b)×h+lb

=[2(1.5+1.25)×0.65+1.5×1.25]m2

=(2×2.75×0.65+1.5×1.25)m2

=(3.575+1.875)m2=5.45